Abstract: An injector has an inlet body. A cup is in a bottomed tubular shape to hold the inlet body. The cup has a sidewall defining first apertures and second apertures. A first pin is inserted in the first apertures. A second pin is inserted in the second apertures. The first pin and the second pin are configured to hold the inlet body and to restrict rotation of the inlet body relative to the cup.

Abstract: A control device for a compression-ignited internal combustion engine includes a nozzle that includes plural injection holes arranged at intervals in the circumferential direction and that directly injects fuel to a combustion chamber, a piston that includes a cavity with an inner circumferential side surface to which a distance from the nozzle varies in the circumferential direction, a first injection hole for injecting fuel to a portion of the inner circumferential side surface to which the distance from the nozzle is the largest out of the plural injection holes, a second injection hole for injecting fuel to a portion of the inner circumferential side surface to which the distance from the nozzle is the smallest out of the plural injection holes, a detection unit that detects a heat release rate in the combustion chamber, and a control unit that determines which of the first and second injection holes is abnormal.

Abstract: Methods and systems are provided for conducting a dual test monitor for the presence or absence of undesired evaporative emissions in a vehicle fuel system and evaporative emissions control system. In one example, the dual test monitor includes conducting an evaporative emissions test diagnostic procedure during both boosted and non-boosted conditions during a single drive cycle. In this way, results from the test diagnostic procedure conducted under boost conditions may be compared to the results of the test diagnostic procedure under non-boosted conditions, to unambiguously diagnose functionality of a plurality of components in the fuel system and evaporative emissions system, which may thus reduce undesired evaporative emissions.

Abstract: Methods are provided for controlling a solenoid spill valve of a direct injection fuel pump, wherein the solenoid spill valve is energized and de-energized according to certain conditions. An example control strategy is provided for operating the direct injection fuel pump when fuel vapor is detected at an inlet of the direct injection fuel pump. To ensure pump effectiveness during the presence of fuel vapor, the solenoid spill valve may be maintained energized for a minimum angular duration past a top-dead-center position of a piston in the direct injection fuel pump.

Abstract: An engine includes a cylinder block with first and second saw cuts intersecting a block face on opposed sides of a block bore bridge. A cylinder head has third and fourth saw cuts intersecting a head face on opposed sides of a head bore bridge. A gasket is placed between the block and the head. The gasket defines a cooling passage adapted to fluidly connect the first, second, third and fourth saw cuts and cool the interbore region of the engine. The cooling passage has an inlet and a pair of outlets.

Abstract: An engine is provided. In one embodiment, the engine includes a precombustion chamber having a body, a secondary combustion chamber disposed at least partially in the body, and a plurality of passages configured to place the precombustion chamber in fluid communication with a main combustion chamber.

Abstract: A series hydraulic hybrid system for a vehicle and a method of operating the same is described. The series hydraulic hybrid system has a hydraulic circuit, high and low pressure hydraulic accumulators, and a control unit. The hydraulic circuit has first and second hydraulic displacement units in fluid communication. The first hydraulic displacement unit is drivingly engaged with an internal combustion engine. The high pressure hydraulic accumulator and the low pressure hydraulic accumulator are fluidly connected to the hydraulic circuit through at least one accumulator valve. The control unit is adapted to receive an input from an operator, compute a requested torque and a target system pressure based on the input, compare an accumulator pressure to the target system pressure, and control at least one of a speed of the internal combustion engine and a valve state of the accumulator valve based on the outcome of the comparison.

Abstract: A motor vehicle, such as a truck, battery charge monitoring and recharging system. The truck engine start/stop system initiates a battery recharge cycle based on programmable battery voltage levels. The system allows the user to individually program the appropriate voltage recharge levels dynamically to meet optimal standards based on location, environment, and other vehicle settings.

Abstract: Methods and apparatus relate to air handling for an internal combustion engine system, particularly utilizing premixed air and fuel. The engine system includes an intake air throttle (IAT) having a position set in response to the engine speed and a variable valve timing module having an intake valve timing set in response to the engine load. The variable valve timing module may be a cam phaser having a position at or between full retard and full advance positions. The engine system may operate in a transient mode or a fuel efficiency mode. The IAT position is adjusted in response to an engine speed error value or set at full throttle. The cam phaser position is adjusted in response to a pressure difference across the IAT, the engine speed, or is set to a limit position.

Abstract: A control system for a spark-ignition internal combustion engine configured to produce tumble flow in a cylinder is provided. The spark-ignition internal combustion engine includes an ignition plug configured to ignite an air-fuel mixture in the cylinder. The control system includes a tumble flow rate controller configured to change a position of a vortex center of the tumble flow as viewed in a direction of a center axis of the cylinder, so as to control a flow rate of the tumble flow around the ignition plug at the ignition timing of the ignition plug.

Abstract: A pipe unit for arrangement in a conduit for a gaseous medium, comprising a pipe-shaped body, a pipe-shaped flexible sealing element, which is fixedly attached at a first end outside the pipe-shaped body and which comprises a flange element at a second end. The flange element is detachably attachable to a flange element in a connecting pipe in the conduit, in order to, when the flange elements are fixed to each other and the pipe unit is accordingly connected with the connecting pipe, to allow movement between the pipe-shaped body and the connecting pipe via the sealing element's flexibility. A mutual fixation of said flange element forms the only touching connection of the pipe unit to said connecting pipe.

Abstract: A vehicular suction noise transmission system includes a first intake apparatus, a second intake apparatus, a fuel recirculation apparatus, and a suction noise transmission apparatus. The first intake apparatus is connected to an internal combustion engine mounted in a vehicular engine compartment. The second intake apparatus is connected to the internal combustion engine. The suction noise transmission apparatus includes a first suction noise transmission end, a second suction noise transmission end, and a vibrating body. The first suction noise transmission end is connected to the second intake apparatus. The second suction noise transmission end is in communication with a vehicle interior. The vibrating body is provided to separate a second intake apparatus side and a vehicle interior side and configured to vibrate according to an intake pulsation so as to transmit a suction noise of the internal combustion engine to the vehicle interior.

Abstract: A method for introducing microwave energy into a combustion chamber of an internal combustion engine in which the microwaves reach a combustion chamber through a microwave window, wherein the microwaves are run about a circumference of the combustion chamber and radially coupled into the combustion chamber after passing through the microwave window. Accordingly a device for introducing microwave energy into the combustion chamber of a reciprocating piston internal combustion engine with at least one cylinder with a cylinder head and a combustion chamber in the cylinder includes at least one circumferential annular hollow conductor cavity extending about the combustion chamber and including at least one feed for the microwave and at least one outlet opening for the microwave arranged between the annular hollow conductor cavity and the combustion chamber. An internal combustion engine includes the features of the device.

Abstract: Methods and systems are provided for estimating an amount of exhaust gas recirculation (EGR) from an exhaust passage into an intake passage of an engine system by operating an exhaust oxygen sensor in a variable voltage (VVs) mode. In one example, a method includes during operation of an exhaust oxygen sensor in the VVs mode where a reference voltage of the exhaust oxygen sensor is adjusted from a lower, first voltage to a higher, second voltage, adjusting engine operation based on the EGR amount estimated based on an output of the exhaust oxygen sensor and a learned correction factor based on the second voltage. In this way, the exhaust oxygen sensor may be used to correct for variations arising due to changing fuel composition and ambient humidity and further used to estimate the amount of EGR being recirculated in the system, thereby enhancing engine fueling and EGR control.

Abstract: An internal combustion engine is provided. The internal combustion engine includes an engine block having at least one cylinder. The internal combustion engine includes a cylinder head engaged with the engine block. The internal combustion engine includes a pre-chamber assembly associated with the cylinder head. The pre-chamber assembly includes a pre-chamber in fluid communication with a main combustion chamber. The pre-chamber assembly includes a fuel supply unit in fluid communication with the pre-chamber to selectively supply fuel to the pre-chamber. The pre-chamber assembly includes an auxiliary unit configured to produce oxygen and hydrogen. The auxiliary unit is in fluid communication with the pre-chamber to supply oxygen to the pre-chamber and in fluid communication with the main combustion chamber to supply hydrogen to the main combustion chamber. The pre-chamber assembly includes an ignition unit associated with the pre-chamber to selectively ignite a mixture of fuel and oxygen in the pre-chamber.

Abstract: A combustion system for use with one or more cylinder bores of an internal combustion engine includes at least one cylinder head defining first and second intake ports in fluid communication with the one or more cylinder bores. A flap is adjustably connected to the at least one cylinder head. The flap includes a first flap portion cooperating with the first intake port extending from an arm and a second flap portion cooperating with the second intake port extending from the arm and disposed adjacent the first flap portion. A controller in electrical communication with an actuator monitors the condition of the engine and actuates the flap to position the first and second flap portions between first and second positions to create a first combustion condition and a second combustion condition.

Abstract: The compressor of a forced induction device is provided in the intake passage of an internal combustion engine. An introduction passage for introducing purge gas into the intake passage is connected to the intake passage. A bent portion is provided at a position of the intake passage that is upstream of the compressor. The curvature of the bent portion in the direction in which the intake passage extends is greater than the curvatures of the portions of the intake passage that are located upstream and downstream of the bent portion. The introduction passage is connected to a part of the bent portion that is on the inner side of the bending direction.

Abstract: Plasma generator has an ignition coil for supplying a discharge voltage, an electromagnetic wave oscillator that generates electromagnetic waves, a mixer that mixes energy for discharge with electromagnetic wave energy, and an ignition plug that causes a discharge and introduces the electromagnetic wave energy to a reaction region. The discharge and electromagnetic wave energy are used together in the reaction region, wherein a combustion reaction or plasma reaction is carried out, triggering a combustion reaction or plasma reaction. Part of a member that constitutes the ignition plug is used as part of a member that forms the mixer.

Abstract: An ignition apparatus for an internal-combustion engine includes a main ignition CDI circuit that has a main ignition boosting circuit boosting battery voltage and a main ignition capacitor storing electric charge boosted by the main ignition boosting circuit, and that releases the electric charge stored in the main ignition capacitor to a primary coil of an ignition coil to make an ignition plug generate spark discharge, and an energy input circuit that has an energy input boosting circuit boosting battery voltage and an energy input capacitor storing electric charge boosted by the energy input boosting circuit, and that releases the electric charge stored in the energy input capacitor to the primary coil, during a spark discharge started by operation of the main ignition CDI circuit, to make a secondary current flow in the same direction and to a secondary coil of the ignition coil, thereby making spark discharge continue which is started by the operation of the main ignition CDI circuit.

Abstract: An ignition device includes: an ignition plug producing plasma discharge between a pair of discharge electrodes of an ignition plug; an ignition coil provided with a primary coil and a secondary coil, the secondary coil applying voltage between the pair of discharge electrodes; a voltage applying unit applying alternating current voltage to the primary coil, a frequency of the alternating current voltage being set to produce voltage resonance in a circuit including the ignition plug and the secondary coil. The voltage applying unit sets an output period of the alternating current voltage to be longer than a first period at which a partial breakdown start to occur at the pair of discharge electrodes, and shorter than a second period at which a total breakdown occurs at the pair of discharge electrodes, when an air/fuel ratio is lower than a predetermined threshold.