Abstract: A system and method for detection, reduction of combustion resonance and engine control is provided. The system senses ion current within one or each cylinder of a multi-cylinder engine and determines combustion resonance from the ion current signal. In addition, the system may determine an engine control strategy to reduce combustion resonance based on the feedback from the ion current signal.

Abstract: In a drive unit of a fuel injection device, an electric current is supplied to the fuel injection device by applying a high voltage to the fuel injection device from a high voltage source whose voltage is boosted to a voltage higher than a battery voltage at the time of opening a valve of the fuel injection device. Thereafter, the electric current supplied to the fuel injection device is lowered to a current value at which a valve element cannot be held in a valve open state by stopping the applying of the high voltage from the high voltage source. Thereafter, in a stage where a supply current is switched to a hold current, another high voltage is applied to the fuel injection device from the high voltage source.

Abstract: Provided is an end seal structure of a fuel rail for a gasoline direct injection engine, in which an end or both ends of a rail body composed of a pipe is/are closed by a thread fastening type of an end cap or end caps having a cap-nut shape, is characterized in that a metallic gasket is provided between an inner wall surface of the end cap having the cap-nut shape and an end section of the rail body, the end cap having the cap-nut shape is screwed and fixed to the rail body, and the gasket is tightened by an axial force created by tightening of the end cap having the cap-nut shape so that the end of the rail body is sealed.

Abstract: Methods, devices, estimators, controllers and algorithms are described for estimating working chamber air charge during engine operations. The described approaches and devices are well suited for use in dynamic firing level modulation controlled engines. Manifold pressure is estimated for a time corresponding to an induction event associated with a selected working cycle. The manifold pressure estimate accounts for impacts from one or more intervening potential induction events that will occur between the time that the manifold pressure is estimated and the time that the induction event associated with the selected working cycle occurs. The estimated manifold pressure is used in the estimation of the air charge for the selected working cycle. The described approach may be used to individually calculate the air charge for each induction event at any time that the engine is operating in a mode that can benefit from the individual cylinder air charge estimations.

Abstract: Provided is a motor generator, which is always connected to an engine via a belt, and is configured to carry out start control of the engine and power generation control, the motor generator having a two-output power transmission mechanism including: a belt driving mechanism, which is configured to drive the engine through the belt; and a gear driving mechanism, which includes a pinion gear to be coupled to a ring gear on the engine side in accordance with an external instruction, and is configured to drive the engine by the pinion gear being coupled to the ring gear, in which an output of the belt driving mechanism and an output of the gear driving mechanism are arranged at positions opposing each other in an axial direction of a rotor of the motor generator.

Abstract: A hybrid-electric vehicle includes a power system, a controller, a driver seat, a passenger seat, a back seat, and sensors. The controller is in communication with the sensors and the power system. The seats are coupled, directly or indirectly, to the power system. The sensors are configured to detect occupancy of the driver, passenger, and back seats. The controller is programmed to receive occupancy data from the sensors, determine an occupancy status based on the occupancy data, set an operating parameter for the power system based on the occupancy status, and control the power system in accordance with the parameter.

Abstract: The rotation speed and the crank position of an engine in an engine stopping process are detected; then, in the case where when the detected crank position is at an intermediate point between the top dead center of any one of the cylinders and the top dead center of the cylinder following said one of the cylinders, it is determined that the engine rotation speed is within a predetermined range, drive of the starter is prohibited for a predetermined time period.

Abstract: An ignition coil includes primary and secondary coils, a center core inserted into a center hole of the primary coil and a center hole of the secondary coil, an annular side core that forms a magnetic circuit through which a first magnetic flux A generated by the primary coil by being joined to the center core permeates, and a permanent magnet that is disposed between the center core and the side core and that emits a second magnetic flux B directed opposite to the first magnetic flux A to apply a magnetic bias. The side core includes protruded portions that protrude towards lateral sides of a T-shaped horizontal portion of the center core, and gaps are provided between the lateral sides of the T-shaped horizontal portion of the center core and the protruded portions of the side core.

Abstract: A method for starting an internal combustion engine with a fuel tank and a low-pressure pump which pumps gasoline out of the fuel tank at a low-pressure to a high-pressure pump that pumps the gasoline at a high-pressure to injectors of the internal combustion engine. An electronic controller is provided for controlling and/or regulating the low-pressure pump, the high-pressure pump, and the injectors. After a start pulse for the internal combustion engine, the method: checks whether a formation of vapor bubbles in the gasoline is possible on the low-pressure side during a hot start. If not possible, then the normal low-pressure is set. If possible, then a low pressure which is high enough that the formation of vapor bubbles is not possible on the low-pressure side is set, and the normal low-pressure is set after a period of time. The problem of vapor bubble formation is prevented in an inexpensive or cost neutral manner via the method.

Abstract: An electric motor for starting internal combustion engines and a relative starting control system of such engine comprising said electric motor of the type with permanent magnets allows a more effective and simpler management of the internal combustion engine thereto the electric motor is connected, wherein a monitoring unit of the electric motor (EMU) and a monitoring unit of the internal combustion engine (ECU) are provided, wherein the electric motor comprises a direction sensor (18) providing a signal representing the rotation direction of the rotor (12) of the electric motor, which is connected to said monitoring unit of the internal combustion engine (ECU).

Abstract: The purpose of the present invention is to provide an engine control system that is capable of promoting mixing of fuel and air during exhaust gas recirculation, thereby suppressing combustion fluctuation of a gasoline engine, such that efficiency and exhaust gas purification can be simultaneously achieved. The engine control system controls an engine and is equipped with an injection device for injecting fuel directly into a cylinder and a recirculation device for recirculating exhaust gas to the intake side.

Abstract: A misfire detection device for an engine having cylinders includes: a crank angle detector that detects an angular position of a crankshaft; a rotational speed calculator that calculates a rotational speed of the crankshaft on the basis of an output from the crank angle detector; and a misfire detector that obtains a difference between a rotational speed of the crankshaft in a combustion process in a diagnosis target cylinder and a rotational speed of the crankshaft in a combustion process in a last cylinder whose ignition order is immediately before the diagnosis target cylinder, and carries out a misfire detection by using a diagnostic value set on the basis of the difference.

Abstract: Systems and methods may be provided for monitoring a fuel level of a vehicle. The fuel may be a gaseous fuel, such as natural gas. An electronic control unit may be able to receive a signal from one or more sensors. The electronic control unit may provide a command to drive a fuel gauge to display the fuel level. The electronic control unit may determine the gauge command based on the received signal and a filling compensation scheme. The electronic control unit may be initialized through a user interface. A filling compensation scheme may be selected during initialization. The electronic control unit may be capable of communicating various sensors, gauges, devices, controls and/or other ECUs of varying specifications.

Abstract: A direct-injection internal combustion engine is described and includes a pressure sensor that is disposed to monitor in-cylinder combustion pressure. A method, executed as a control routine in an attached controller, includes monitoring engine speed, engine load, temperature and combustion pressure. Combustion variation parameters are determined based upon the combustion pressure. A desired state for a combustion parameter can be determined based upon the engine speed, the engine load, and the temperature, and an adjustment to the desired state for the combustion parameter can be determined based upon the combustion variation parameters, wherein the adjustment to the desired state is selected to achieve acceptable states for the combustion variation parameters. Operation of the internal combustion engine is controlled based upon the desired state for the combustion parameter and the adjustment to the desired state for the combustion parameter.

Abstract: A method of evaluating operability of a gaseous fuel admission valve of an internal combustion engine is disclosed. The method includes operating the internal combustion engine on gaseous fuel by repeatedly actuating the gaseous fuel admission valve. The method further includes measuring a sequence of temporal developments of an electrical operation parameter respectively associated with an actuation of the gaseous fuel admission valve. The sequence includes a first temporal development to be evaluated and a plurality of temporal developments preceding the first temporal development. The method also includes evaluating operability of the gaseous fuel admission valve based on the first temporal development of the measured sequence and at least one of the plurality of preceding temporal developments of the measured sequence.

Abstract: The invention relates to a control apparatus of an engine. The apparatus carries out a minute-injection for injecting a minute amount of a fuel so as not to generate an engine torque when a required engine load is zero. The apparatus calculates at least one coefficient for correcting a heat release gravity position calculated when the minute-injection is carried out such that it corresponds to its base position and/or for correcting a heat release rate corresponding the gravity position calculated when the minute-injection is carried out such that it corresponds to its base rate. When the required engine load is larger than zero, the apparatus controls the gravity position corrected by the coefficient to its target position.

Abstract: Disclosed is a flap bearing arrangement (10), having a bearing mount (20) with two side parts (24) connected by means of a tube section (22), between which is arranged an O-ring (30) which surrounds the tube section (22). Also disclosed is a flap bearing arrangement (100) for an intake device (200) having a flap shaft (100).

Abstract: A process and a system for preventing pre-ignition in an internal combustion engine (ICE) includes detecting an ionization level of a combusted gas from a cylinder of the ICE during gas exchange and for a given combustion cycle i. When the ionization level is greater than a reference ionization level a pre-ignition countermeasure prior to and/or during an immediate subsequent combustion cycle i+1 is executed. The ionization sensor may be part of a spark initiating device of the ICE or be a separate ionization sensor.

Abstract: A pre-chamber body for an engine is disclosed. The pre-chamber body may have a pre-chamber. The pre-chamber body may also have flow transfer channels fluidly connecting the pre-chamber and an exterior of the pre-chamber body. Each flow transfer channel extends along a flow transfer channel axis (B) from an inner opening via a throat section to an outer opening. A cross-section of the flow transfer channels converges from a first cross section (A1) of the inner opening to a second cross-section (A2) of the throat section and diverges from the second cross-section (A2) to a third cross-section (A3) of the outer opening along the flow transfer channel axis (B). At least one of the inner opening and the outer opening has an oval shape with a maximum diameter (a1, a3) and a minimum diameter (b1, b3), the maximum diameter (a1, a3) being greater than the minimum diameter (b1, b3).

Abstract: An ignition coil includes primary and secondary coils, a center core inserted into a center hole of the primary coil and a center hole of the secondary coil, an annular side core that forms a magnetic circuit through which a first magnetic flux A generated by the primary coil by being joined to the center core permeates, and a permanent magnet that is disposed between the center core and the side core and that emits a second magnetic flux B directed opposite to the first magnetic flux A to apply a magnetic bias. The side core includes protruded portions that protrude towards lateral sides of a T-shaped horizontal portion of the center core, and gaps are provided between the lateral sides of the T-shaped horizontal portion of the center core and the protruded portions of the side core.