Abstract: The present disclosure provides a fuel injector seal assembly comprising a seal member comprising a first section, a second section and an annular recess disposed in the first section, the first section having a first diameter and the second section having a second diameter wherein the first diameter is greater than the second diameter; and a sleeve member comprising a first end received by the first section of the seal member, the sleeve member further including a lengthwise portion configured to press fit around a nozzle housing of a fuel injector to cause heat transfer from the nozzle housing toward a body portion of the fuel injector.

Abstract: Method and apparatus for controlling the volume of air or air and non-combusted fuel mixture inside a combustion chamber and cylinder of an internal combustion engine. The apparatus includes an inlet-outlet portal having open and closed states and connected to air or air and non-combusted fuel source(s), and a combustion chamber with reduced volume. The inlet-outlet portal is controlled, when open, to permit air or air and non-combusted fuel mixture to enter or enter and exit the combustion chamber and cylinder and when closed to prevent air or air and non-combusted fuel mixture from entering or exiting the chamber and cylinder, in which the volume of air or air and non-combusted fuel mixture located inside the chamber and cylinder when the inlet-outlet portal closes, is less than the volume of the combustion chamber and cylinder defined when the piston is at the bottom dead center position inside the cylinder when the inlet-outlet portal is closed.

Abstract: A piston for a premixed spark-ignited or premixed dual fuel internal combustion engine is disclosed. The piston may be configured to reciprocate along a longitudinal axis of a combustion chamber defined by a cylinder of the engine. The piston may comprise a piston head, a top annular groove configured to receive a top annular ring, and a skirt having a pin bore extending along a pin bore axis that is configured to receive a wrist pin for connecting the piston to a connecting rod. The piston may further comprise a top land formed in the piston head that is chamfered in a direction perpendicular to the pin bore axis such that the top land does not contact an inner wall of the cylinder when the piston rocks about the pin bore axis. The top land may be non-chamfered in a direction parallel to the pin bore axis.

Abstract: A fuel delivery system for an engine is provided. The fuel delivery system includes a tank, a temperature sensor, a delivery conduit, a return conduit, a heat exchanger, a first valve, a second valve, an accumulator, and a controller. The controller is configured to receive a signal indicative of a temperature of a fuel present within the tank. The controller is also configured to control at least one of the first valve and the second valve to selectively bypass at least a portion of the fuel to the tank through the return conduit and the accumulator based, at least in part, on the received signal. The portion of the fuel is adapted to raise the temperature of the fuel present within the tank.

Abstract: A coolant circuit is provided for an internal combustion engine having a compression machine for intake air. The coolant circuit includes a high-temperature circuit and a low temperature circuit. The high-temperature circuit is provided in order to cool the internal combustion engine by way of a coolant radiator and a first coolant pump arranged in the high-temperature circuit. The low-temperature circuit is provided with a second coolant pump in order to cool the intake air compressed by the compression machine by way of an intercooler and in order to cool a coolant of a coolant circuit in a condenser. The high-temperature circuit and the low-temperature circuit are cooling circuits which are separated from each other. The thermal base load of the low-temperature circuit is reduced by this design, whereby the pressure level in the coolant circuit can be reduced resulting positively in a reduction of the energy consumption.

Abstract: A spark-ignition direct fuel injection valve includes, at least, a seat member provided with a fuel injection hole and a valve seat and a valve body which controls fuel injection from the injection hole by contacting and separating from the valve seat. In the spark-ignition direct fuel injection valve: the injection hole has an injection hole inlet which is open inwardly of the seat member and an injection hole outlet which is open outwardly of the seat member; an opening edge of the injection hole inlet has a first round-chamfered portion formed on an upstream side with respect to a fuel flow toward the injection hole inlet; and an extending length (L) of the injection hole does not exceed three times a hole diameter (D) of the injection hole.

Abstract: An ignition timing control device has a knocking detection unit and an ignition timing adjustment unit. In a condition that the operation state of the internal combustion engine is suitable for adjustment of the ignition timing, the ignition timing control device outputs to an igniter an adjusted ignition signal as adjusted (corrected) by an adjusted ignition timing determination process. The ignition timing control device outputs to the igniter a reference ignition signal as it is outputted from an internal combustion engine control unit without adjustment (correction) in a condition that the operation state of the internal combustion engine is not suitable for adjustment of the ignition timing.

Abstract: An eight cylinder engine includes cylinders that are fired at intervals corresponding to a crank angle of 90 degrees. The firing is conducted in four cylinders of each of first and second banks at uneven intervals. In a pair of cylinders of each of the banks in which the firing is consecutively conducted at an interval corresponding to a crank angle of 90 degrees, a central angle of an exhaust cam provided for one cylinder in which the firing is conducted later is larger than that of an exhaust cam provided for the other cylinder. In a pair of cylinders of each of the banks in which the firing is consecutively conducted at an interval corresponding to a crank angle of 270 degrees, a central angle of an exhaust cam provided for one cylinder in which the firing is conducted later is larger than that of an exhaust cam provided for the other cylinder.

Abstract: A variable compression ratio apparatus, which is provided to an engine rotating a crank shaft upon receiving combustion power of a mixture from a piston for changing a compression ratio of the mixture, may include a connecting rod transferring combustion power of the mixture received from the piston to the crankshaft, and including a small end rotatably connected with the piston and a large end forming a circular hole, a crank pin, an eccentric cam disposed to be concentrically rotatable in the hole of the large end, an eccentric link at which the eccentric cam is disposed at a first end, a variable link having a first end rotatably connected with a second end of the eccentric link, a control link having a first end rotatably connected with a second end of the variable link, and a control shaft controlled by a controller and rotated together with the control link.

Abstract: A piezo injector includes a piezo actuator arranged in an actuator chamber and a valve plunger arranged in a valve plunger bore and having a first end face facing the piezo actuator. The valve plunger is arranged between a first control chamber defined by a valve plunger bore portion delimited by the first end face and a spring chamber formed by a valve plunger bore portion opposite the first control chamber. A second control chamber is delimited by a second face of a nozzle needle and a sleeve guided by the nozzle needle. A leakage pin is arranged in a leakage pin bore between the piezo actuator and the first end face of the valve plunger. The leakage pin bore is formed in an intermediate plate arranged on a side of a control plate facing the piezo actuator, the valve plunger bore being formed in said control plate.

Abstract: In a tank which stores lubricating oil or fuel therein, a strainer for lubricating oil or fuel is arranged at the bottom portion of the inside of the tank. The tank and the lubricating oil or fuel which is stored in the tank carry a positive charge. A self-discharge type static eliminator is placed on the outer surface of the bottom floor of the tank which corresponds to the back side of the inside surface of the tank which faces the strainer to thereby eliminate static electricity from the lubricating oil or fuel which flows into the strainer by the self-discharge type static eliminator.

Abstract: Methods and systems are provided for assessing the quality of water in a water injection system using existing engine sensors. A change in manifold charge temperature following a water injection may be compared to a change in intake oxygen level to determine an error between an amount of water delivered to the engine and an amount of water actually used in the engine. The error may be correlated with the water quality and used for correcting subsequent water injection commands.

Abstract: A cylinder head and push rod tube configuration for an internal combustion engine is disclosed. The cylinder head includes a first end comprising a recessed rocker arm cavity. The cylinder head also includes a second end opposite the first end and defining an upper end of a combustion chamber. The recessed rocker arm cavity has a lower surface with a pair of push rod tube bores therethrough. The second end of the cylinder head has a pair of push rod tubes positioned in the push rod tube bores between the recessed rocker arm cavity and the second end. An intake port and an exhaust port each extend through the cylinder head to the combustion chamber.

Abstract: An internal combustion engine; wherein at least two cylinders continuously communicate via the cylinder head; and wherein the connecting rod in one cylinder is offset from the connecting rod in the second cylinder by a first angle between 8 and 12 degrees as measured from the crankshaft, and a camshaft having a second offset of one-half of the first angle offset.

Abstract: A GDCI engine control system includes a fast electric heater located within a pocket in a cylinder head. The pocket is in fluid communication with multiple intake ports. A heater control system includes a capacitor that is configured to provide a voltage that is greater than battery voltage to more quickly heat the intake air during a cold start. Subsequently a lower voltage can be supplied to the heater.

Abstract: The invention relates to an internal combustion engine (1) having a settable variable compression ratio and having a connecting rod (3), which connecting rod has an adjustment mechanism (4) for the adjustment of the settable variable compression ratio, a first hydraulic line (5), a second hydraulic line (6), a hydraulic outflow duct (47) and a switching module (21) for the switching of the adjustment mechanism (4), wherein the switching module (21) is arranged on the connecting rod (3) and a first position of the switching module (21) corresponds to a first compression ratio and a second position of the switching module (21) corresponds to a second compression ratio that differs from the first compression ratio, wherein the switching module (21) has a switching element (22) and a sleeve (23) surrounding the switching element (22), wherein the switching element (22) and the sleeve (23) are movable relative to one another, and the switching element (22) has a recess (36) and an edge region (37) bordering the re

Abstract: A crank chamber internal pressure reduction mechanism for internal combustion engine includes a crankshaft, a rotating shaft (a balancer shaft), a suction mechanism (a primary drive gear), a first discharge passage (a discharge passage, a joining passage, and a discharge hose), and a second discharge passage (a discharge passage). The crankshaft is rotatably supported to a crankcase. To the rotating shaft, a rotation force is transmitted from the crankshaft. The suction mechanism is disposed at the rotating shaft. The suction mechanism rotates integrally with the rotating shaft. To the first discharge passage, the emission is discharged from the crank chamber. The second discharge passage is communicated with the first discharge passage. The second discharge passage is disposed inside the rotating shaft. The suction mechanism includes a third discharge passage (a hole). The third discharge passage is communicated with the second discharge passage.

Abstract: A method and system to restrict the flow of accumulated liquid water from the intake manifold into the cylinders of an internal combustion engine by reducing the velocity of contained liquid water as it moves through the containment feature during vehicle maneuvering are disclosed. The body of the intake manifold includes a water containment feature having a water containment reservoir having an open upper portion and water-restricting interior walls. A water passageway is provided in each interior wall. The water passageway may be of any of several shapes, including a V-shape notch extending from the top of the wall. The interior wall is a central interior wall and the containment reservoir further includes an intermediate interior wall between the side walls that intersects the central interior wall. The water passageway is formed in at least one of the interior walls and may be formed in all of the walls.

Abstract: A cooling jacket is formed at least in part within the cylinder head mounted on an engine block defining one or more piston cylinders and one or more intake and exhaust ports in communication with each piston cylinder. The cooling jacket includes a first passageway, a second passageway and a turbulence chamber. The first passageway extends from a first flow passage and intersects the turbulence chamber at a first angular position, and the second passageway extends from a second flow passage and intersects the turbulence chamber at a second angular position different from the first angular position. A swirling action is imparted to fluid media passing through the turbulence chamber.

Abstract: A sliding block for a scotch yoke reciprocating piston engine having a base body with a receiving opening for cooperating with a crankpin of a crankshaft and side surfaces, which are oriented toward slide ways of a scotch yoke during operation, with a supply of pressurized lubricant from the receiving opening for the crankpin to the side surfaces being provided during operation, characterized in that the base body is provided with sliding plates in the region of the side surfaces oriented toward the slide ways of the scotch yoke, characterized in that the sliding plates are supported in floating fashion relative to the base body and between the sliding plates and the side surfaces, there is a gap, which is at least partially filled with lubricant during operation of the scotch yoke reciprocating piston engine.