Abstract: Disclosed is a control system for a hydrogen addition internal combustion engine that uses hydrocarbon fuel and hydrogen gas as combustion fuel. The control system includes a canister 52 for adsorbing fuel vapor generated in a tank 34 for storing the hydrocarbon fuel; a purge VSV 66 for purging the fuel vapor into an intake port 18 of the hydrogen addition internal combustion engine in a predefined situation; hydrogen addition ratio setup means for setting the ratio of hydrogen gas addition to the hydrocarbon fuel; and hydrogen gas addition ratio adjustment means for increasing the ratio of hydrogen gas addition when the fuel vapor is purged into the intake port 18.

Abstract: In a multi-cylinder internal combustion engine for vehicles, having a plurality of air ducts leading to the cylinders and an associated engine control device situated in a housing, the air ducts are combined into a single unit, on the exterior of which the engine control device housing is situated on its lower part which forms the underside, and the lower part of the engine control device housing simultaneously forms a part of the air ducts.

Abstract: Reciprocating engine construction wherein a rotating assembly converts the linear motion of the piston into rotational motion more efficiently, therefore yielding more torque and working power while using less fuel. The rotating assembly is three components working together, an interchanger unit with track rollers mounted at both ends and attached at it's center to the connecting rod by bearings allowing it to rotate while reciprocating, a stationary cylindrical unit having opposing wave shaped races (tracks) encircling it's perimeter with slopes of at least 45 degrees to convert the reciprocating motion to rotational motion on a one to one ratio 90 degrees perpendicular to the axis of the interchanger as the track rollers follow the slopes of the races, a rotating carrier that keeps the track rollers aligned and transfers the converted rotational motion to the output shaft by means of gears.

Abstract: A splash guard mechanism of a gear position sensor for a motorcycle protects the gear position sensor without providing a special cover. In an engine of a motorcycle where a gear position sensor that senses a shift stage selected by a shift drum protrudes sideways in the vicinity of a driving sprocket for driving a rear wheel by a crankcase that holds a crankshaft, a splash guard mechanism of the gear position sensor is configured by a splash guard formed on a sprocket cover that covers the driving sprocket from the side and arranged between the gear position sensor and the driving sprocket, and a rib protrudes from the reverse side of the driving sprocket with the gear position sensor between them in the crankcase.

Abstract: An internal combustion engine variable compression ratio system is provided that includes a piston inner (5a), a piston outer (5b) that is fitted around the outer periphery of the piston inner (5a) so that it can slide only in the axial direction and is capable of moving between a low compression ratio position (L) and a high compression ratio position (H), a raising member (14) that can pivot around axes of the piston inner and outer (5a, 5b) between a non-raised position (A) and a raised position (B), and an actuator (20) connected to the member (14) and pivoting it to the non-raised position (A) or the raised position (B), in which piston outer high compression ratio position latching means (30b) is disposed between the piston inner (5a) and the piston outer (5b) and operates, when the piston outer (5b) has reached the high compression ratio position (H), so as to prevent relative axial movement of the piston inner (5a) and the piston outer (5b).

Abstract: An exhaust gas recirculation device for an engine having a cylinder head with a suction port and an exhaust port, provided with a mechanism for recirculating a portion of exhaust gas to the suction side of the cylinder head, comprises a connection hole is opened through a wall of the cylinder head disposed between the suction port and the exhaust port. The connection hole is bored vertically slantwise. The connection hole at the suction side is opened along the direction of swirls of sucked air. A throttle is disposed in at least either a suction flow passage communicating with the suction port or an exhaust flow passage communicating with the exhaust port so that the opening area of the suction flow passage or the exhaust flow passage can be adjusted by the throttle.

Abstract: A split-cycle air hybrid engine operatively connects an air reservoir to a split cycle engine. A power piston is received within a power cylinder and operatively connected to a crankshaft such that the power piston reciprocates through an expansion stroke and an exhaust stroke during a single revolution of the crankshaft. A compression piston is received within a compression cylinder and operatively connected to the crankshaft such that the compression piston reciprocates through an intake stroke and a compression stroke in a single rotation of the crankshaft. The compression cylinder is selectively controllable to place the compression piston in a compression mode or an idle mode. An air reservoir is operatively connected between the compression cylinder and the power cylinder and selectively operable to receive compressed air from the compression cylinder and to deliver compressed air to the power cylinder for use in transmitting power to the crankshaft during engine operation.

Abstract: A method for the closed-loop speed control of an internal combustion engine-generator unit with a coupling, in which method, when the engagement of the coupling is detected, a change is made from a first set of parameters to a second set of parameters. In the second set of parameters, a second run-up ramp is set, which determines the presetting of the set speed, and second controller parameters are set as the determining factors for computing controller components of a speed controller.

Abstract: An intake system of an internal combustion engine includes a surge tank communicating with cylinders of the engine via individual intake paths, a vacuum tank connected to the surge tank, a valve that permits or inhibits communication between the surge tank and the vacuum tank, and a control unit that controls opening and closing of the valve. The control unit executes the steps of: (a) opening the valve to communicate the surge tank with the vacuum tank when the surge tank is held in a negative-pressure condition during operation of the engine, and closing the valve upon a lapse of a predetermined period of time so as to hold the vacuum tank in a negative-pressure condition, (b) opening the valve for a predetermined period of time when a condition for starting the engine is satisfied, so as to reduce the pressure in the surge tank, and (c) closing the valve when the engine is started.

Abstract: A fluid piston engine with a plurality of cylinders wherein the plurality of cylinders are daisy chained through a single turbine having a single impeller. The fluid piston engine has a plurality of daisy chained cylinders that burn a fuel of hydrogen, and an oxidizer of air, preferably oxygen. A method of operating a fluid piston engine with a plurality of daisy chained cylinders includes steps where the operating controls are triggered by a fluid level sensor in a cylinder. Rather than from the cylinder, combustion byproducts are exhausted through a relief valve on an accumulator. Engine performance is varied by selectively idling cylinders and by varying the relative timing of multiple pairs of cylinders, wherein each pair uses internal combustion to expel fluid out of a first cylinder, through the turbine and into the second cylinder of the pair in which the combustion gases are compressed by the circulating fluid piston.

Abstract: A resonator is connected with an intake air pipe and forms a resonant chamber therein. The resonator includes a diaphragm, which is generally planar and is disposed between an air passage of the intake air pipe and the resonant chamber. The diaphragm forms multiple oscillation sections, which have different eigenfrequencies, respectively.

Abstract: A control device for cylinder reducing operation of a multi-cylinder engine for a vehicle controls the number of working cylinders in the engine more appropriately for fuel economy while ensuring the operational stability of the engine and comfortable drivability of the vehicle. The control device comprises a detector detecting engine output torque and judges if cylinder reducing operation is to be executed while referring to the engine output torque. Because of the detection of engine output torque, cylinder reducing operation will be executed as long as torque requested of the engine is available from the reduced number of working cylinders, thereby ensuring the generation of torque required in operating the engine while saving fuel as much as possible. Through a learning process, criteria for the judgment of execution of cylinder reducing operation are modified to be adapted for any variation of engine output performances.

Abstract: An improved vehicle cooling system is disclosed having the capability of controlling various thermal components of the system to effectively control the heating and cooling of an engine of the vehicle based on instantaneous vehicle and ambient conditions and also based upon predictive conditions. These predictive conditions can include information about the upcoming terrain of the route along which the vehicle will travel.

Abstract: In an engine having a generator mounted thereon, an oil passage is formed within the engine's crankcase to supply oil to an oil jet for cooling one or more pistons. In addition, oil is supplied to an oil jet for cooling the generator, using the oil passage in common with the oil supply for cooling the piston, without requiring a separate, dedicated oil passage for the generator. The cooling oil delivery structure is provided for cooling the generator which is located at one end of the crankshaft. The oil passage for cooling pistons, which includes an oil jet for cooling each respective piston by jetting oil to the piston, is arranged on an axis substantially parallel to the crankshaft. A generator-cooling oil jet is provided on the crankcase at a terminal end of, and in fluid communication with the oil passage for cooling the pistons.

Abstract: An air-cooled diesel outboard motor comprising an air-cooled diesel engine. The diesel engine includes a vertical crankshaft, an exhausting port and a drive-leg. The drive leg includes a gear-box, a propeller and a water pump in a lower unit, a water cooling exhalation port and a mechanism fastened to the boat. The vertical crankshaft is attached to the drive-leg and an exhalation port of the engine connects to the exhalation port of the drive leg with a water cooled pipe through which the cooling water flows. Propelling power is utilized to push the water into the port.

Abstract: An engine cover for at least partially enclosing a portion of an engine. The engine cover includes a body having an inwardly-facing surface for facing an engine and an outwardly-facing surface opposite the inwardly-facing surface. The body also includes a plurality of through-apertures disposed in spaced relation to one another about the body for mounting the body to an engine. The engine cover also includes a plurality of sockets integral with the body and disposed in spaced relation to one another about the body. The engine cover also includes a plurality of leads extending different lengths within the body between the outwardly-facing surface and the inwardly-facing surface. The leads extend between a first end exposed in a first of the plurality of sockets and a second end exposed in a second of the plurality of sockets different than the first socket.

Abstract: A drive train system having a driving engine that has a cooling system for cooling the driving engine is provided. The cooling system has a coolant circuit, a cooling device, and a fan that is associated with the cooling device and that is in driveline connection with the driving engine. A controllable or regulatable clutch is arranged between the driving engine and the fan. The clutch is a hydrodynamic clutch having a primary wheel and a secondary wheel, which jointly form a working chamber that can be filled with a working fluid, and is provided with a working fluid supply system associated with the clutch and with means for influencing the transmission behavior of the hydrodynamic clutch.

Abstract: A portable 4-cycle engine with a configuration which allows cooling air to flow in the direction of the crankshaft relative to a cylinder head on a cylinder, and a portable machine equipped with this engine, are provided, respectively. In such an engine, the cylinder is separated from the cylinder head including a combustion chamber formed at the cylinder side therein. The engine further comprises a valve train area formed in the cylinder head at the downwind side of the cooling air, and a plurality of vertical fins protruding upward from the cylinder head and extending in the direction of the crankshaft. The valve train area and the plurality of vertical fins are all integrally formed with the cylinder head, so that the cylinder head can be made thinner and lighter with high rigidity to enable the portable machine to become smaller, lighter, and more powerful.

Abstract: An apparatus comprising an internal combustion engine, a fuel tank, a fuel separator disposed fluidically between the fuel tank and the engine, wherein the fuel separator comprises first and second passageways separated at least partially by a selective barrier that selectively transports a first fuel in a fuel mixture at a higher rate than a second fuel in the fuel mixture, and wherein the first passageway is configured to receive an input of fuel from the fuel tank, and an extraction fluid source in fluid communication with the second passageway of the fuel separator.

Abstract: A joint for positioning between first and second elements includes an outer member and an inner member. The first and second elements are arranged for linear motion along a common axis. The outer member is configured for movement relative to the first and second elements along a first axis perpendicular to the common axis, and the inner member is mounted within the outer member for rotation relative to the outer member about a second axis perpendicular to the first axis and the common axis and for movement relative to the outer member along the second axis. The outer member is restrained from movement along the second axis. The outer member defines first and second parallel flat sides. Each flat side defines a plane perpendicular to the common axis. The outer and inner members each defining an opening for receiving a drive arm.