Abstract: [Problem to be Solved] A space from a skirt to a side wall is uniformly deformed in a wide range without a bias. [Solution] A piston 1 has two pin bosses 3 disposed so as to face each other at an interval, a side wall 4 disposed on both sides of the pin boss 3, and a skirt 5 provided continuously to the side wall 4, and a pin hole 3a into which a piston pin 1a can be inserted is formed in the pin boss 3. Inner walls 10 of the side wall 4 and the skirt 5 are continuous with each other and disposed by facing on both sides of a pin boss axis C1 with the pin boss axis C1 between them. A horizontal section of the inner wall 10 is formed along a specific oval shape E.

Abstract: A free piston apparatus includes a piston receptacle in which a piston device having a piston is reciprocable along an axis. The piston receptacle includes or forms a combustion chamber delimited by a wall arrangement forming an inlet opening for the supply of fresh gas and an outlet opening for the removal of exhaust gas. Fresh gas is suppliable via a supply conduit. The free piston apparatus includes a housing for fresh gas which is connected to the supply conduit in a flow direction of the fresh gas being supplied. The housing forms a settling chamber for fresh gas which surrounds the piston receptacle at least in sections in the region of the inlet opening in a circumferential direction of the axis. The settling chamber opens into the combustion chamber via the inlet opening.

Abstract: A method and system for improving the fuel economy and lowering the emissions of internal combustion engines by injecting predetermined amounts and ratios of on-board or locally generated hydrogen and oxygen to the engine's air intake and varying the gas addition volume and hydrogen/oxygen ratio as a function of the operating conditions, e.g., in line with the instant engine load.

Abstract: Provided is an electric valve device which is capable of improving the accuracy of detecting whether there is a gas leakage from a blow-by gas passage and capable of detecting detachment of the electric valve device from a pipe of a fresh air passage. The electric valve device includes an inflow side pipe portion, an outflow side pipe portion, a barrier which partitions off the inflow side pipe portion from the outflow side pipe portion, a valve body which opens and closes an opening arranged on the barrier by moving in the axial direction, and a solenoid which drives the valve body. The inflow side pipe portion includes a bypass path which communicates with the outflow side pipe portion through a second opening separately from a passage which communicates with the outflow side pipe portion through a first opening used as the opening.

Abstract: A method for ventilating a crankcase of an internal combustion engine using natural gas as a fuel source may include filtering ambient air through an air filter. The method may also include heating the filtered ambient air by a jacket heat exchanger. The method may further include directing the heated ambient air through an inlet of the crankcase to purge blow-by gases including natural gas from the crankcase.

Abstract: A method for operating an internal combustion engine having a high-pressure fuel injection system stops and starts the engine independently of an intervention by the motor vehicle operator and then restarted. A high-pressure fuel pump is used to pump fuel to a high-pressure reservoir to which at least one high-pressure fuel injector is connected in order to inject fuel into the at least one cylinder of the internal combustion engine. Fuel pressure can be adjusted on the high-pressure side using an electrically actuated pressure reduction valve (PDV).

Abstract: An internal combustion engine has a cylinder with a combustion chamber and a piston supported reciprocatingly in the cylinder and delimiting the combustion chamber. A crankcase is connected to the cylinder and a crankshaft is rotatably supported therein. The piston is operatively connected to the crankshaft so as to drive the crankshaft in rotation. A transfer passage provides flow communication between crankcase interior and combustion chamber when the piston is at bottom dead center. The transfer passage has a port opening connecting the transfer passage to the crankcase interior and has a transfer port connecting the transfer passage to the combustion chamber. A fuel supply device supplies fuel into the transfer passage at a location between the transfer port and the port opening. The transfer passage has a connecting opening and is connected to the crankcase interior at the connecting opening. A control element controls the connecting opening.

Abstract: A marine engine has a cylinder block comprising first and second banks of cylinders disposed along a longitudinal axis and extending transversely with respect to each other in a V-shape so as to define a valley there between; and a lubricant cooler located in the valley and extending parallel to the longitudinal axis. The lubricant cooler has a lubricant conduit that conveys engine lubricant parallel to the longitudinal axis and then transversely to the longitudinal axis to the cylinder block. The lubricant cooler further has a cooling conduit that conveys cooling fluid alongside the lubricant conduit to thereby cool the lubricant conduit and the engine lubricant therein.

Abstract: A vehicle thermal management system includes a radiator receiving a liquid coolant in a coolant supply line and discharging the coolant into a coolant pump supply line. A coolant pump receives the coolant from the coolant pump supply line and discharges the coolant into multiple engine components. A transmission oil heat exchanger defining a first transmission oil heat exchanger receives the coolant after being discharged from the multiple engine components. An air-to-coolant sub-cooling heat exchanger defines a second transmission oil heat exchanger. The sub-cooling heat exchanger receives a portion of the coolant bypassing the multiple engine components.

Abstract: A case for an oil mist separator comprises an inlet and an outlet through which blow-by gas flows, a separation section for separating oil mist contained in the blow-by gas, and an oil discharge section disposed at a bottom portion of the case. The oil discharge section includes a first discharge part having a first discharge hole for discharging the separated oil, and a second discharge part surrounding the first discharge hole. The second discharge part includes a reservoir for storing the oil discharged from the first discharge hole, and a second discharge hole provided at a bottom portion of the reservoir. The second discharge part further includes a passage providing fluid communication between the inside and the outside of the second discharge part.

Abstract: An engine cooling system includes a coolant circulation path, which circulates coolant between the water jacket and the radiator of an internal combustion engine, a pump, a control valve, which is provided in the coolant circulation path, and a controller. The controller executes a warming-up promotion control and a pressure relaxation control. In the pressure relaxation control, the controller controls the aperture ratio of the radiator port such that the lower the temperature of the radiator, the lower becomes the engine rotational speed at which the aperture ratio of the radiator port is increased.

Abstract: Balancer shaft 5 and 6 rotatably set through bearings 11˜14 and an oil pump 2 driven by power from the balancer shaft 5 and 6 are provided in a balancer housing. Oil discharged from an outlet portion 42 of the oil pump 2 is supplied to a main oil gallery 10 through an outlet passage 48. A bearing filter 55 that filters a part of the oil is provided in the outlet passage 48 that extends from the outlet portion 42. A communication passage 50 that branches off from the outlet passage 48 and communicates with the bearings 11˜14 supplies a part of the oil having been filtered by the bearing filter 55 to the bearings 11˜14. By filtering the oil that is going to be supplied to the bearing portion, decrease in durability of the bearing portion can be suppressed.

Abstract: A free piston apparatus includes a piston receptacle in which a piston device having a piston is reciprocable along an axis. The piston receptacle includes or forms a chamber delimited by a wall arrangement forming an inlet opening and an outlet opening. A cooling device is arranged on the piston receptacle for cooling the wall arrangement. The cooling device includes or forms a cooling channel arranged radially outside on the wall arrangement. The cooling channel has first and second cooling regions axially on opposing sides of the outlet opening. The piston receptacle includes or forms an outlet chamber, arranged outside on the wall arrangement, for exhaust gas exiting via the outlet opening. The cooling channel has a third cooling region which flow-connects the first cooling region and the second cooling region along the outlet chamber and is positioned at least in sections radially outside of the outlet chamber.

Abstract: An air filter device for a motor vehicle is provided with a filter housing having an air inlet and an air outlet, a filter insert which is received in the filter housing and divides the inside of the filter housing into an untreated air section and a pure air section, and a bypass line for supplying air into the untreated air section. The bypass line extends from a connection opening in the filter housing to a cooler, especially a charge air cooler of the motor vehicle.

Abstract: Various systems are provided a piston for an engine. The piston has a piston crown, which includes a plurality of protrusions for enhancing mixing in a combustion chamber. As one example, a piston crown includes a plurality of protrusions extending outward from a top surface of the piston crown and spaced apart from one another around a circumference of the piston crown, each protrusion of the plurality of protrusions increasing in height and decreasing in width as the protrusion extends outward from a central axis of the piston crown.

Abstract: An air-flow circuit for air flow through a bearing enclosure of a turbine engine, the air-flow circuit including a supply system arranged such as to supply the air into the bearing enclosure; a discharge system arranged such as to discharge at least some of the air from the bearing enclosure; an oil-removal system connected to the discharge system, the oil-removal system being capable of reducing the amount of lubricant contained in the air coming from the discharge system; and a compressor arranged between the discharge system and the oil-removal system, the compressor being capable of increasing the air pressure at the intake of the oil-removal system.

Abstract: Systems, methods and apparatus for controlling operation of dual fuel engines are disclosed that regulate the fuelling amounts provided by a first fuel and a second fuel during operation of the engine. The first fuel can be a liquid fuel and the second fuel can be a gaseous fuel. The fuelling amounts are controlled to improve operational outcomes of the duel fuel engine.

Abstract: A partition plate is configured to separate an intake passage formed by an intake pipe to be coupled to a combustion chamber into a first intake passage and a second intake passage. The first intake passage is openable and closable by a valve. A shape of a first cross section orthogonal to an extending direction of the intake pipe is set on the basis of a shape of a surface of the intake pipe that faces the partition plate with the second intake passage interposed therebetween.

Abstract: There is provided an engine stopping device including a stopping solenoid, where an operating shaft, interlocked to a control rack of a fuel injection pump, is rotatably supported by an engine case in a pass-through manner. The control rack is forcibly movable to a stopping position by an action of the stopping solenoid on an operation arm provided for a projecting portion of the operating shaft in an integrally rotatable manner. An extending-retracting rod of the stopping solenoid and the operation arm are interlocked by fitting engagement between a pin provided for the extending-retracting rod and a cut-out portion of the operation arm. The cut-out portion is configured in a shape elongated along a direction perpendicular to a movement trajectory of the extending-retracting rod.

Abstract: The present invention is a fluids mechanical system for optimizing the catalytic effect of catalytic alloys for the elimination of microbiological contaminants in hydrocarbon fuels, that has catalytic alloy pieces mainly formed of tin and antimony, which are contained in a container that can be a metal tube, a stainless steel mesh or another type of plastic container, characterized in that the volume of the pieces or pellets of catalytic alloy is less than 60 cubic millimeters, preferably between 10 cubic millimeters and 45 cubic millimeters, the pieces having a spherical, disc or irregular shape.