|| List of recent Internal Combustion Engine-related patents
|Control device and control method for internal combustion engine|
The control device for an internal combustion engine including a plurality of cylinders includes: a misfire detection unit for detecting a misfire state for each of the plurality of cylinders; a plurality of electronic throttles each provided on an intake pipe corresponding to each of the plurality of cylinders, for adjusting an intake air amount taken into each cylinder by way of a throttle opening degree; and a throttle opening degree control unit for controlling the throttle opening degree of each of the plurality of electronic throttles. When the misfire detection unit detects the misfire state in any one of the plurality of cylinders, the throttle opening degree control unit decreases a limited value of the throttle opening degree of the cylinder in the misfire state as time elapses..
|Air-fuel ratio detection device and air-fuel ratio detection method|
When an air-fuel ratio detection performed by detecting an output of a downstream sensor, which is a limiting-current type air-fuel ratio sensor arranged at a downstream side of a catalyst in an exhaust passage of an internal combustion engine, and calculating an air-fuel ratio at the downstream side of the catalyst in accordance with the output, if the output is within a predetermined range including an output corresponding to a theoretical air-fuel ratio, a relationship between the output and an air-fuel ratio that is calculated by calculation means is shifted more to a rich side relative to a correspondence relationship between an output of an upstream sensor, which is a similar sensor to the downstream sensor arranged at an upstream side of the catalyst in the exhaust passage of the engine, and an air-fuel ratio.. .
|Vehicle control system and controller|
A vehicle control system includes a controller configured to be able to perform a slip control in which an internal combustion engine becomes a non-operation state by setting a first clutch to a release state and an electric rotating machine is driven by setting a second clutch to a slip state. In a case where a vehicle starts to run by starting up the internal combustion engine during the slip control is performed, the controller performs a first engagement control in which the second clutch becomes an engagement state and then the first clutch becomes an engagement state at the time a lock-up clutch is in a non-engagement state, and performs a second engagement control in which the first clutch becomes an engagement state and then the second clutch becomes an engagement state at the time the lock-up clutch is in an engagement state..
|Powertrain control system|
The present application relates to a powertrain control system (1) for a motor vehicle. The vehicle has an internal combustion engine (5) coupled to a transmission (9).
|Driveline clutch variable clutch capacity reapply, shaping and lash management|
Method to control a clutch device within a transmission selectively coupling an internal combustion engine to a driveline includes controlling slip of the clutch device in response to an engine autostart event. Controlling slip includes adjusting a commanded fill pressure to the clutch device to a first predetermined magnitude that exceeds a pressure threshold until the clutch device is filled, decreasing the commanded fill pressure from the first predetermined magnitude to a second predetermined magnitude below the pressure threshold, and adjusting the commanded fill pressure in accordance with a first ramping profile and in accordance with a subsequent second ramping profile when a transmission input speed achieves a desired first transmission input speed..
|Clutch device and electric machine|
The invention relates to a clutch device having an actuating device for a drivetrain of a motor vehicle, the drivetrain having an internal combustion engine, an electric machine with a stator and a rotor, and a transmission device, wherein the clutch device can be arranged in the drivetrain between the internal combustion engine at one side and the electric machine and the transmission device at the other side, the clutch device and the actuating device are integrated into the rotor of the electric machine, and the actuating device has a rotatable ramp device with first ramps and second ramps, wherein the clutch device has an electric actuator for actively rotating the ramp device, in order to structurally and/or functionally improve the clutch device, and to an electric machine having a stator, a rotor and a clutch device of this type integrated into the rotor.. .
|Method for operating exhaust gas purification systems|
The invention relates to a method for purifying exhaust gas in vehicles with internal combustion engines. The method is characterised in that exhaust gas coming from the engine (1) is then led past the catalyst(s) (4) near the engine when the engine of the vehicle is not performing positive work..
|Scr catalyst ammonia surface coverage estimation and control|
Described herein are various embodiments of an apparatus, a system, and a methods for reducing nox emissions using ammonia storage on an scr catalyst. For example, according to one embodiment, an apparatus for controlling an scr system of an internal combustion engine system includes an ammonia storage module and a reductant dosing module.
A turbocharger unit for an internal combustion engine having at least one exhaust line for the evacuation of exhaust gases from the combustion chamber of the engine and at least one inlet line for the supply of air to the combustion chamber is provided. The turbocharger unit includes a turbine which interacts with a compressor in order to extract energy from the exhaust-gas flow of the engine and pressurize the inlet air of the engine.
|Check valve device in the suction side of a hydrostatic power-unit that can be operated in the same direction of rotation as a pump and as a motor|
A hydrostatic power-unit (7) is connected with an internal combustion engine (2). The suction side (s) of the power-unit (7), when operating as a pump, sucks hydraulic fluid from a tank (9) and delivers into a delivery side (p), and when operating as a motor is driven by hydraulic fluid from a hydraulic accumulator (20).
|Control device for internal combustion engine|
There is provided a control device for an internal combustion engine. An electricity generator is configured to be driven by the internal combustion engine.
|Drive train for a hybrid electric vehicle and a method of operating such a drive train|
A method of operating a drive train (110) for a hybrid electric vehicle, and a drive train, is disclosed. The drive train comprises an internal combustion engine (120), a first electrical machine (130) and electrical energy storage means (150).
|Valve for metering a fluid medium|
A valve for metering a fluid (liquid or gaseous medium), in particular, a fuel injector for internal combustion engines, having a valve housing, an actuator accommodated in the valve housing and acting on a valve member, an electrical connector accessible on the outside of the valve housing, and an electrical supply lead that produces an electrical connection from the connector to the actuator and has two lead strands, each having a flexible strand section. To optimize the electrical supply lead to lower production costs, simplified valve assembly and anti-twist protection for the actuator, each lead strand is made of an electrical conductor provided with a plastic sheathing and having a front and rear, in each case elongated conductor section and a middle conductor section in between that has at least one meander-shaped curvature for realizing the flexible strand section, and a plastic bridge member, in one piece with the plastic sheathings in the area of the middle conductor sections of both electrical conductors, connects the two lead strands to form a torsionally stiff supply-lead module..
|Liquid hydrocarbon fuel treating device for an internal combustion engine|
|Safety brake system for trailers|
In a gaseous-fuelled stoichiometric compression ignition internal combustion engine, a pilot fuel is injected directly into the combustion chamber to help initiate a multi-point ignition. The engine provides performance improvements approaching those of high pressure direct injection engines but with less complexity because the gaseous fuel is introduced into the intake air subsystem at relatively low pressure and as a result of the stoichiometric combustion, the low oxygen content in the combustion products exiting the combustion chamber allows the use of a three-way catalyst instead of other after treatment arrangements normally associated with conventional compression ignition engines that require the addition of a reductant..
|Control valve for an internal combustion engine exhaust gas recirculation system|
The invention relates to a valve (10) able to control an exhaust gas recirculation system of an internal combustion engine (1) equipped with a turbine (7) installed in an exhaust circuit (3) of the internal combustion engine (1), said valve comprising a body (11) through which a first stream (12) of exhaust gas tapped off upstream of the turbine (7) can flow and through which a second stream (13) of exhaust gas tapped off downstream of the turbine (7) can flow, said valve being configured to control the flow of the first and second streams of exhaust gas through said body (11).. .
|Reclaim internal combustion engine|
An internal combustion engine is provided with at least two reclaim cylinders for each two fuel burning cylinders. A plurality of routing members, such as hoses, are provided to route exhaust gas from the fuel burning cylinders to the reclaim cylinders..
|Exhaust system for internal combustion engine|
In an exhaust system for an internal combustion engine, an output member is configured to transmit power generated by a motor to a valving element via a valve stem. An output shaft is disposed on a rotation central axis of an output gear and coupled with the output gear to be rotatable integrally therewith.
|Fuel supply control apparatus for bi-fuel internal combustion engine, and method of switching fuel in bi-fuel internal combustion engine|
When switching the fuel to be used for engine operation from gasoline to cng, in a state where cng is supplied experimentally to one cylinder serving as a judgment object and gasoline is supplied to other cylinders, whether or not cng can be supplied to the cylinder serving as a judgment object is judged based on an amount of change Δpc in fuel pressure inside a cng delivery pipe (step s13 to step s16). When it is judged that a gas fuel can be supplied to all cylinders (step s19: yes), the fuel to be used for engine operation is switched from the liquid fuel to the gas fuel (step s20)..
|Fuel injection control device for internal combustion engine|
When a given learning performance condition is met, a partial lift injection for opening a fuel injector is performed by an injection pulse which brings about a partial lift state in which a lift quantity of a valve body of the fuel injector does not reach a full lift position, and an integrated value of a drive current is calculated which flows through a drive coil of the fuel injector after an injection pulse of the partial lift injection is turned off. An inductance of the drive coil is calculated in consideration of a direct current superposition characteristic of the drive coil on the basis of the integrated value of the drive current, whereby the inductance of the drive coil is calculated with high accuracy.
|Method and device for operating a fuel delivery device of an internal combustion engine|
The disclosure relates to a method for operating a fuel delivery device of an internal combustion engine, in which method an electromagnetic actuating device of a volume control valve is switched such as to set a delivery volume, wherein an intensity of an energy that is supplied to the electromagnetic actuating device for switching purposes, in particular of a current supplied to the electromagnetic actuating device and/or a level of a voltage applied to the electromagnetic actuating device, depends at least intermittently on a rotational speed of the internal combustion engine.. .
|Dual fuel system and engine system operating method|
A dual fuel system for an internal combustion engine includes a gaseous fuel subsystem and a liquid fuel subsystem. A plurality of fuel injectors each define a gaseous fuel passage fluidly connected to a gaseous fuel manifold of the gaseous fuel subsystem, a liquid fuel passage fluidly connected to a liquid fuel manifold of the liquid fuel subsystem, and a liquid fuel leak path from the liquid fuel passage to the gaseous fuel passage.
|Control device for internal combustion engine|
A cylinder-inflow egr gas amount is estimated, a misfire limit egr gas amount is calculated on the basis of an engine operation state, and the misfire limit egr gas amount is compared with the cylinder-inflow egr gas amount to predict whether a misfire occurs. When the misfire is predicted, a misfire avoidance control is executed.
|Internal combustion engine with compensation weight arranged on the crankshaft and serving as an imbalance, and method for production of the crankshaft|
The invention concerns an internal combustion engine and a method of its production having at least one cylinder and with a crank drive comprising a crankshaft, in which the crankshaft mounted in the crankcase has an associated crankshaft throw, the crankshaft throws being arranged spaced apart along the longitudinal axis of the crankshaft, and at least one compensation weight serving as imbalance is arranged on the crankshaft on the side opposite at least one crankshaft throw the compensation weight has an arcuate form on the outward-facing side, the outside of which running in the peripheral direction has a constant distance s from a reference axis which runs parallel to and spaced by a distance Δ from the longitudinal axis of the crankshaft, wherein the reference axis is arranged on the side facing away from the compensation weight, starting from the longitudinal axis of the crankshaft.. .
|Piston arrangement for a combustion chamber of an internal combustion engine, having a variable compression ratio|
A piston arrangement for a combustion chamber of an internal combustion engine having a variable compression ratio. A piston includes a device for the variable adjustment of the compression ratio associated with the combustion chamber, and a piston pin is coupled to the piston via respective connecting regions, via which piston pin the piston can be coupled to a connecting rod of the internal combustion engine.
|Piston ring for a piston of an internal combustion engine, and a method for producing same|
The invention relates to a method for producing a piston ring (30, 130, 230) for a piston (10) of an internal combustion engine, comprising a ring back (31), an upper ring flank (32), a lower ring flank (33), and a running surface (42), and the method comprising the following method steps: (a) preparing a ring blank (30′) with a ring back (31′), an upper ring flank (32′), a lower ring flank (33′), and an outer lateral face (34′), (b) shaping an asymmetrical convex contour (35) along the outer lateral face (34′) and shaping a radially outward-extending protrusion (36) in the outer lateral surface (34′) in the region of the lower ring flank (33′), (c) coating the outer lateral surface (34′) with a coating material, (d) removing the protrusion (36), thereby exposing the material of the ring blank (30′) in the shape of a circumferential surface (41) which blends into the coating (39), and forming an oil scraper edge (40) between the circumferential surface (41) and the lower ring flank (33′), and (e) post and/or final processing of the coated ring blank (30′) to obtain a finished piston ring (30, 130, 230).. .
|Internal combustion engine independent valve actuator|
A device and method for double actuating, by pressure differential, a valve of a combustion chamber of an internal combustion engine, wherein the double actuating device comprises an actuator piston displaceably arranged in an actuator cylinder between two chambers of inversely varying volume, mechanically attached to the stem of said valve. The valves are double actuated independently of engine operation, the method allowing for variation in timing, duration, and lift under an electronically controlled fluid circuit, using alterable constants to allow for modifiable operating modes, also allowing reprogramming of said electronics to provide for in-place upgrades..
|Internal combustion engine|
An internal combustion engine is provided. Facing pistons eliminate a cylinder head, thereby reducing heat losses through a cylinder head.
|Hydrogen supplemental system for on-demand hydrogen generation for internal combustion engines|
A portable, on-demand hydrogen generation system is provided for producing hydrogen and injecting the hydrogen as a fuel supplement into the air intake of internal combustion engines, more particularly to vehicles. Hydrogen and oxygen is produced with a fuel cell at low temperatures and pressure from water in a supply tank.
|Internal combustion engine|
The internal combustion engine has an ammonia feeder which feeds ammonia to a combustion chamber and an nox selective reduction catalyst which is arranged in an engine exhaust passage. The removal rate of the nox selective reduction catalyst depends on a ratio of concentration of ammonia to nox of the exhaust which flows into the nox selective reduction catalyst, that is, a ratio of concentration of inflow.
|Control device of a hybrid vehicle and method for operating same|
A control device for a hybrid vehicle having a drive-train with a hybrid drive unit including an internal combustion engine and an electric machine. A clutch is connected between the internal combustion engine and the electric machine.
|Control device of a vehicle, vehicle including control device, and control method of vehicle|
A vehicle includes at least one sensor generating a signal to control an operation of an internal combustion engine; and a control unit configured to store a control parameter to control an operation of the internal combustion engine, and to correct the control parameter based on an output of the at least one sensor. The control unit stops correcting the control parameter while the vehicle is at a halt, and the power generator is generating electric power by driving of the internal combustion engine..
|Stationary zero emissions system|
A method and device to optimize the cumulative beneficial effect of harvesting available forms of passive energy and storing the passive energy in the form of hydrogen and oxygen. The cumulative energy that is recovered is converted to electrical energy which powers an electrolyzer to produce hydrogen and oxygen for fuel in an internal combustion engine..
|Hybrid power driving device for vehicle and control method thereof|
This invention proposes a hybrid power driving device including an electric motor, an internal combustion engine, an automated mechanical transmission, a clutch, a main reducer and a differential, where the automated mechanical transmission includes first to sixth gear wheels forming meshing pairs, 2 synchronizers, an input transmission shaft connected with the engine, an input transmission shaft connected with the motor, and an output transmission shaft. This device provides for the motor with two gears, and provides for the engine with four gears, which can meet the practical demands of the engine and the motor.
|Unbalanced shaft and method for producing same|
An unbalanced shaft for compensating for inertial forces and/or mass moments of inertia of an internal combustion engine (1), having an unbalanced portion (8), the center of mass of which extends eccentric to the axis of rotation (11) of the unbalanced shaft (6) for generating the shaft imbalance (7), a bearing portion (9) adjacent to the unbalanced portion, and a bearing race (10) joined thereto, the outer surface (13) of which serves as a race for the rolling elements of a roller bearing rotationally supporting the unbalanced shaft, and the inner surface (12) of which retracts radially relative to the outer circumscribed circle (14) of the unbalanced portion in a bearing circumference region running in the direction of the imbalance. In order to assemble the bearing race on the bearing portion, the following geometric relationships are provided: (i) d2>d1, (ii) e>½(d2−d1), (iii) e<½(d2+d1), where d1=outer circumscribed circle diameter of the unbalanced portion and the bearing portion, d2=inner diameter of the bearing race, and e=center point offset between d2 and d1..
|Method for determining segment times of a sensor wheel of an iternal combustion engine|
A method for determining segment times of a sensor wheel of an internal combustion engine, the sensor wheel being non-rotatably connected to a crankshaft of the internal combustion engine, marks being situated along the circumference of the sensor wheel, and the crankshaft of the internal combustion engine covering predetermined angle ranges during the segment times. Tooth times are determined as time intervals between two marks of the sensor wheel; a low-pass filtering is applied to the determined tooth times, and filtered tooth times are determined as a result of the low-pass filtering.
|Method for determining the particle count in the exhaust gas of internal combustion engines|
To allow for further advancing the possibilities for analysis with information regarding the number of particles, the pressure ratios at the filter are determined as well, and whereby the mean particle diameter is determined, based on this and a third conversion function, as well as the quantity of particles, and the number of particles is established based on the characteristic value, the suction time and/or the suction volume, the data of the first conversion function and the determined mean particle diameter, relying therein on various intermediate computing processes and conversion functions, all of which can, however, be combined into a common fourth function, and wherein the number of particles is detected by way of this fourth conversion function.. .
|Air-guiding component with an intercooler|
An air-guiding component for a charged internal combustion engine has an intercooler provided with coolant connectors that is disposed in a housing of the air-guiding component. The housing has at least two housing parts including a basic housing part.
|Intake manifold with an intercooler|
An intake manifold for a charged internal combustion engine has an intercooler provided with coolant connectors that is disposed in an intake manifold housing. The intake manifold housing has at least two housing parts including a basic housing part.
|Internal combustion engine|
The internal combustion engine has an upstream side nox selective reduction catalyst and a downstream side nox selective reduction catalyst which are arranged in an engine exhaust passage. The upstream side nox selective reduction catalyst has a region where the nox removal rate becomes substantially constant when the ratio of concentration of ammonia to nox of the inflowing exhaust rises.
|Control device for electrically heated catalyst|
A purpose of the present invention is to prevent a pm-caused short circuit between a heating element and a case in an electrically heated catalyst. The electrically heated catalyst is provided in an exhaust gas passage of an internal combustion engine the air-fuel ratio of which is controlled at a ratio near a theoretical air-fuel ratio at an operation time.
|Secondary air supply system for internal combustion engine|
A secondary air supply system includes an electric air pump that supplies secondary air to a location upstream of an exhaust gas purification catalyst arranged in an exhaust passage; a control valve that opens/closes a secondary air supply passage; a pressure detector that detects a pressure between the pump and the control valve; and a control unit that detects a first pressure in a first operating state where the control valve is closed, and detects a second pressure in a second operating state where the control valve is open, using the pressure detector. The control unit corrects at least one of the first and second pressures based on a first driving voltage for the pump in the first operating state and a second driving voltage in the second operating state, and estimates a secondary air flow rate based on the first and second pressures after correction..
The invention relates to a dosing module (10) for injecting a reduction agent, in particular a urea-water solution, into an exhaust pipe of an internal combustion engine, in particular of a self-igniting internal combustion engine, to reduce nitrogen oxides in the exhaust stream, wherein the dosing module has a main cooling element (12) through which a cooling liquid flows, in particular for cooling an injection valve (64) for the reduction agent. According to the invention, an additional cooling element (14), through which the cooling liquid likewise flows, in particular for cooling in the region of an electrical plug connection (22) and of an electromagnet (80) for actuating the injection valve (64), is placed on the basis cooling element (12), wherein a guide insert (30) for the cooling liquid is arranged in the main cooling element (12).
|Control apparatus and control method for internal combustion engine|
By raising a temperature of an element portion of a particulate matter sensor (8) that is arranged in an exhaust passage (4) of an internal combustion engine (2), a heat generation amount that results from the combustion of particulate matters is detected, during a removal treatment of removing, through combustion, particulate matters that are deposited on the element portion. Besides, an amount of particulate matters that are deposited on the element portion of the particulate matter sensor (8) is detected on the basis of an output of the particulate matter sensor (8), before the start of this removal treatment.
|Reagent dosing system and method of dosing reagent|
A reagent dosing system for dosing a reagent into the exhaust gas stream of an internal combustion engine includes a reagent tank for storing a supply of reagent; an injector module including an atomising dispenser and a positive-displacement metering pump which draws reagent from the reagent tank and delivers it to the dispenser; a supply line coupling the reagent tank to the injector module; a dosing control unit operable to control the injector module to inject reagent into the exhaust gas stream; and an additional priming pump arranged, in use, to urge reagent along the supply line toward the injector module under selected conditions.. .
|Method, apparatus, and system used for purifying and silencing exhaust of internal combustion engine|
A method for purifying and muffling exhaust gas from an internal combustion engine, comprising the following steps: 1) allowing exhaust gas discharged by the internal combustion engine to enter into the interior of a housing (6) via an exhaust gas inlet (7) of the housing (6), wherein abrupt expansion of cross section occurs from the exhaust gas inlet (7) to the interior of the housing (6); 2) allowing scrubbing water which can absorb so2 to enter via a scrubbing water inlet (11), and allowing the exhaust gas in the interior of the housing and the scrubbing water to come into contact with each other, then discharging the scrubbing water via a scrubbing water outlet (12) of the housing; and 3) discharging the exhaust gas via an exhaust gas outlet (10) of the housing. The method simultaneously produces effects of purifying so2, muffling and saving energy, and eliminates sparks in the exhaust gas.
|Exhaust gas heating method|
A method according to the present invention of heating exhaust gas to be introduced into an exhaust gas purifying device from an internal combustion engine by heating and igniting fuel supplied into an exhaust passage from a fuel supply valve includes the steps of determining a necessity for supplying fuel into the exhaust passage, setting an amount of fuel to be supplied into the exhaust passage from the fuel supply valve, the amount being set when it is judged in the determining step that fuel needs to be supplied into the exhaust passage, checking an operating state of the engine, and controlling an air-fuel ratio of exhaust gas such that the air-fuel ratio falls within an area where amounts of both smoke and hc to be generated in the exhaust gas are low in the operating state of the engine checked in the checking step.. .
|Electrically heated doc using hcscr cold start nox controls|
An exhaust gas treatment system for an internal combustion engine is provided. The system includes an exhaust gas conduit extending from the engine configured to receive an exhaust gas stream from the engine, a first injector in fluid communication with the exhaust gas conduit configured to selectively inject fuel containing unburned hydrocarbon (hc) into the exhaust gas conduit and an oxidation catalyst disposed in the exhaust gas conduit downstream from the first injector.
|Flow controlled electrically assisted dpf regeneration|
A particulate filter assembly, an exhaust gas treatment system having a particulate filter assembly, and a control method for flow controlled zoned regeneration of the particulate filter assembly are provided. The particulate filter assembly is configured to receive an exhaust gas stream from an internal combustion engine and includes an inlet end configured to receive the exhaust gas stream, a filter configured to remove particulates from the exhaust gas stream, a heating device positioned upstream from the filter having a plurality of zones, each zone of the plurality of zones independently operable to heat a corresponding region of the filter and an exhaust flow valve positioned downstream from the filter configured to selectively restrict flow of the exhaust gas stream through the filter..