Abstract: An ECU for determining whether a request for acceleration is made to a supercharged internal combustion engine includes an acceleration request determining unit that determines whether a pressure difference between the upstream pressure and downstream pressure of a throttle valve disposed in an intake system is equal to or smaller than a predetermined value, and determines that a request for acceleration is made when the pressure difference is equal to or smaller than the predetermined value. The ECU also includes a variable valve actuating mechanism control unit that controls an InVVT and an ExVVT so that the intake charging efficiency and output torque of the engine become equal to the maximum intake charging efficiency and output torque at a certain downstream pressure when the acceleration request determining unit determines that a request for acceleration is made.

Abstract: A system for injecting from an injector into a duct of an engine system is provided. The system may include a first flange on a duct connection side, a second flange on an injector connection side, a stand-off separating the first flange from the second flange to form an air gap therebetween, and a seal offset from at least one of the first and the second flanges and located within the airgap and between the first flange and the second flange.

Abstract: A supercharger includes a housing, and a turbine shaft supported in a center hole in the housing through rolling bearings. Lubricating oil for the rolling bearings exists only within the housing. A cooling water jacket is provided within a body portion of the housing over a region from one axial end portion of the body portion to the other axial end portion thereof.

Abstract: Embodiments described herein relate to internal combustion engine exhaust after-treatment systems and to methods of treating exhaust of an internal combustion engine.

Abstract: An engine system with a turbocharger is provided. The system may include an exhaust manifold having plural independent exhaust passages, each of the exhaust passages being connected to an exhaust port of a corresponding engine cylinder. The system may further include a collective part formed by gathering said independent exhaust passages in said exhaust manifold or on a downstream side of said exhaust manifold. The system may further include an exhaust turbocharger connected to a downstream side of said collective part. The system may further include a variable exhaust valve for changing each passage cross-sectional area of said independent exhaust passage at an upstream side of said collective part. The system may further include a controller for controlling said variable exhaust valve, wherein said controller is configured to perform independent exhaust throttle control for reducing a passage cross-sectional area of at least one of said independent exhaust passages.

Abstract: A control module and method for an exhaust system of an engine can include a secondary air intake (SAI) pressure module that monitors SAI pressure. An accumulation module can accumulate an SAI string length based on the monitored SAI pressure. A calculation module can determine an average SAI string length based on the accumulated SAI string length. A determination module can determine an operating characteristic of the vehicle exhaust based on the average SAI string length.

Abstract: A variable valve lift apparatus includes a camshaft with a first cam lobe and a second cam lobe, a cam follower with a first follower contacting the first cam lobe and a second follower contacting the second cam lobe, a connection rotatably connecting the first follower to the second follower, a main body supporting the first follower and the second follower, a connector selectively connecting the first follower and the second follower to the main body, a lost motion elastic member provided on the main body for supplying restoring force to the first follower and the second follower, and a valve configured to be opened and closed by the cam follower.

Abstract: This invention is to provide a tappet clearance adjusting cover coupled with a secondary air valve. The tappet clearance adjusting cover is disposed on a cylinder head of an engine. The secondary air valve includes a recessed element and a cap which jointly form a receiving space receiving therein a one-way valve. The recessed element is provided with an inlet pipe interposed between the cap and the tappet clearance adjusting cover. By disposing the secondary air valve on the tappet clearance adjusting cover and arranging the inlet pipe between the cap and the tappet clearance adjusting cover, with the one-way valve received in the receiving space of the secondary air valve, heat dissipation can be improved while the one-way valve is protected against premature deterioration and carbon deposition caused by a high-temperature exhaust gas from the cylinder head. Thus, reliability as well as a service life of the one-way valve is effectively increased.

Abstract: The invention concerns a procedure to ascertain a concentration of sooty particles in an exhaust gas system of an internal combustion engine or a depletion of an emission control system of the internal combustion engine due to the loading of sooty particles, whereby the sooty particle concentration in the exhaust gas system is determined by means of a collecting particle sensor, which emits a sensor signal and whereby the depletion of the emission control system due to the loading of sooty particles is determined from the sooty particle concentration. The task is thereby solved, in that the sensor signal is corrected by means of predetermined corrections with regard to a sensor temperature and/or an exhaust gas temperature and/or a flow velocity of the exhaust gas and/or a voltage applied at the particle sensor.

Abstract: A flow regulator valve having multiple stages is described herein. The flow regulator valve provides a base amount of propane when the engine is idling and provides additional propane to the engine based on the engine's requirements.

Abstract: The invention concerns a system for assisting regeneration of a particulate filter (6) arranged in an exhaust line (3) of a diesel engine (1) associated with a oxidizing catalyst (7), the engine (1) being equipped with feeding means (8) for injecting into the cylinders thereof at least one post-injection. Said system comprises means (17) for controlling the feeding means (8) in accordance with a strategy for regenerating the filter (6) wherein the feeding means (8) are switched between a first operating mode with post-injection for priming the catalyst (7) and a second operating mode with post-injection for producing an exothermic reaction by the primed catalyst (7). Said system comprises a temperature sensor (18) arranged in the exhaust line (3) upstream of the catalyst (7), and the control means (8) are capable of switching the feeding means (8) between the first and second operating modes based on said sensed temperature.

Abstract: An exhaust manifold includes a plurality of branch pipes that guide exhaust gas discharged from cylinders, and a junction pipe that converges downstream-side end portions of the plurality of branch pipes in a flow direction of exhaust gas, and that has a drawn portion that is formed by drawing so as to be constricted in a radial direction of the drawn portion. The junction pipe is provided with a sensor that detects the oxygen concentration in exhaust gas. The sensor is provided at a downstream side of a deepest draw inside diameter in the flow direction of exhaust gas. The deepest draw inside diameter is the smallest inside diameter of the drawn portion.

Abstract: The present invention provides, as one aspect, an exhaust gas purifying apparatus for an internal combustion engine including a setting unit that sets commanded values of an amount and a period of injection from an additive fuel injector, an adding controlling unit that injects fuel from the additive fuel injector in accordance with the commanded values, a determining unit that determines whether a high-accuracy measurement state has been entered in which a difference between measurement values of first and second air-to-fuel ratio sensors is within a predetermined range, and a calculating unit that calculates, when the high-accuracy measurement state has been entered, a deviation between the commanded value and a true value of the amount of injection by the adding controlling unit as a correction value, from at least one of the measurement values of the first and second air-to-fuel ratio sensors.

Abstract: A silencer for a motorcycle with relaxed layout restrictions has a drum portion connected to a head. A conduit extends through the drum portion in a direction of connection. The drum portion decreases in cross sectional area toward a downstream side. A catalyst holding portion formed in the head has a catalyst fixed member to which a catalyst inserted member is fixed at a position upstream of the drum portion. A catalyst is inserted into the catalyst inserted member.

Abstract: An ignition system includes an electrical energy delivery device having a first electrode terminating at a first end portion and a second electrode positioned in the ignition system separately from the electrical energy delivery device. The second electrode terminates at a second end portion disposed a first distance from the first end portion to form an air gap therebetween. The air gap forms an area including the shortest distance between the first electrode and the second electrode.

Abstract: An exhaust gas purification controller for controlling bed temperature of a DPF, which is arranged in an exhaust system of an internal combustion engine, at a target bed temperature by supplying fuel to the internal combustion engine. The exhaust gas purification controller includes a control unit and a transitional state detection unit. The control unit, when controlling the bed temperature of the exhaust gas purification catalyst, learns a supply amount of fuel that allows for correction of a difference between the catalyst bed temperature and the target bed temperature in the present state and reflects a learned value obtained through the learning on the supply amount of fuel. The transitional state detection unit detects a transitional state of an exhaust gas flow to the DPF. The control unit restricts the learning when the transitional state of the exhaust gas flow is detected.

Abstract: The present invention relates to an integrated system for the treatment of exhaust gases, which preferably consists of at least one NOx-storing component, at least one in situ ammonia-generating component, at least one ammonia-storing component and at least one ammonia (NH3)-SCR-component, as well as to a process for the treatment of exhaust gas comprising at least the steps (i) storing of NOx under lean exhaust gas conditions in at least one NOx-storing component; (ii) in situ conversion of the stored NOx to ammonia (NH3) under rich exhaust gas conditions; (iii) storing of the ammonia (NH3) in at least one NH3-storing component under rich exhaust gas conditions as well as the (iv) reaction of NH3 with NOx under lean exhaust gas conditions. Thereby, the partial steps “storing of NOx” and “conversion of NH3 with NOx” are carried out at least partially and/or temporarily simultaneously and/or parallelly. Furthermore, preferred catalysts are disclosed for carrying out the process.

Abstract: An actuator for automobiles has a housing in which a communication channel for ventilation is formed, the communication channel allowing the inside and the outside of the housing to communicate with each other. Only one communication channel is formed, and the communication channel has an ascending portion that increases in height toward the inside of the housing. The ascending portion is formed so that a vertically lowermost point of the end (a second opening) of the ascending portion on the inner side of the housing is positioned higher than an uppermost point of the end (a first opening) of the ascending portion on the outer side of the housing. With such a configuration, condensation in the housing is minimized, and the risk of malfunction due to entrance of water is minimized.

Abstract: The invention concerns a procedure to determine the sulfur removal of a NOx storage catalytic converter in an exhaust gas aftertreatment system of an internal combustion engine, whereby conditions, in which a surplus of the reducing agent is generated in the internal combustion engine, are adjusted in the internal combustion engine for the sulfur removal, whereby a SOx removal amount is determined in a SOx removal calculation using a model from the reducing agent flow and from additional operating parameters of the internal combustion engine. In so doing, dynamic effects during the desulferization of the NOx storage catalytic converter can be better taken into account for the SOx removal calculation; and in so doing, the subsequent effect of the NOx storage catalytic converter on the reduction of the nitrogen oxides in the exhaust gas can be more accurately predicted, which makes the process management more streamlined and consequently more fuel efficient.

Abstract: In a method for determining the conversion performance of an oxygen storage-capable catalytic converter of an internal combustion engine, it is proposed that the catalytic converter be supplied with a stoichiometric exhaust gas composition, a known emission change is briefly undertaken and at the same time the signals of a lambda probe located downstream from the catalytic converter are detected so that based on the emission change and signals of the lambda probe a differentiated conclusion about the conversion performance of the catalytic converter for the pollutants hydrocarbon HC and nitrogen oxides NOx is delivered. According to the invention a simple and cost-effective method for differentiation of the pollutants hydrocarbon HC and nitrogen oxides NOx and thus for carrying out an improved diagnosis method is made available.