Abstract: A cooling water communication passage extending in a cylinder disposition direction is provided at a cylinder block-integrated crankcase of an engine with parallel multiple cylinders loaded by being tilted forward, and cooling water is supplied to a water jacket from the cooling water communication passage. The cooling water communication passage is adjacently disposed below the water jacket at a rear side of the cylinder bank, a water pump is placed at a crankcase side wall located at a rear side from a crankshaft, and a downstream side cooling water pipe through which the cooling water discharged from the water pump is passed is connected to an intermediate portion of the cooling water communication passage.

Abstract: An engine can include an air cleaner in communication with intake ports of the engine, and a wind introduction duct for introducing a wind into a primary chamber of the air cleaner. The wind introduction duct can include a resonator for absorbing predetermined frequencies. The resonator can have a predetermined capacity and can have a communication port in communication with the inside of the introduction duct.

Abstract: A cylinder liner for insert casting and a method for manufacturing the cylinder liner are provided. The cylinder liner and the method are applied to cylinder blocks and improve the adherence and the bonding strength with a cylinder block material in a favorable manner. The cylinder liner satisfies the following requirements: (i) the height of projections 1P is in a range between 0.5 mm and 1.0 mm, inclusive; (ii) the number of the projections 1P is in a range between 5 and 60, inclusive, per cm2 on the outer circumferential surface; (iii) the area ratio of regions each encircled by a contour line of a height of 0.4 mm is in a range between 10% and 50%, inclusive; (iv) the area ratio of regions each encircled by a contour line of a height of 0.2 mm is in a range between 20% and 55%, inclusive; (v) the region each encircled by a contour line of the height of 0.4 are independent from each other; and (vi) the area of the regions each encircled by a contour line of the height of 0.4 mm is in a range between 0.

Abstract: Provided is a cylinder head including a head casting defining a plurality of exhaust ports. A tuned exhaust manifold is internally defined by the head casting. The tuned exhaust manifold includes a plurality of exhaust runners in communication with the plurality of exhaust ports and a collector volume in communication with the plurality of exhaust runners. Each of the plurality of exhaust ports and each of the plurality of exhaust runners are substantially oriented or directed toward the collector volume. Additionally, the head casting defines a main cooling jacket operable to cool the head casting. The head casting also defines an upper and lower cooling jacket disposed in heat exchange relation to the tuned exhaust manifold. The cylinder head casting may include integral spark plug tubes and cam drive case. Additionally, the cooling jackets may have a series coolant flow pattern or a parallel coolant flow pattern.

Abstract: An exhaust valve assembly for a two stroke internal combustion engine having a cylinder with at least one main exhaust port and one auxiliary exhaust port is disclosed. The assembly comprises a main exhaust valve for at least partially closing the main exhaust port, an auxiliary exhaust valve for at least partially closing the auxiliary exhaust port, an actuator for actuating the main exhaust valve and the auxiliary exhaust valve, the actuator including a rotary shaft having a first gear and a second gear, the rotary shaft being operatively connected to the main exhaust valve via the first gear, the rotary shaft being operatively connected to the auxiliary exhaust valve via the second gear, an electric motor operatively connected to the rotary shaft for rotating the rotary shaft.

Abstract: A combustion engine according to the present invention has a unitary fan-pulley assembly (F), in which a cooling fan (8) and a starter pulley (9) are formed integrally with each other. The cooling fan (8) is fixed to a crankshaft (1). The pulley (9) receives a starting force when engaged with engagement pawls 14b integral with a recoil starter (14). A bracket (11) is fixedly mounted on the crankshaft (1) together with the unitary fan-pulley assembly (F) for urging engagement grooves (92), each defined between neighboring engagement projections (91) of the starter pulley (9), in an axial direction of the unitary fan-pulley assembly (F).

Abstract: A piston crank mechanism has an upper link coupled to a piston by a piston pin, a lower link having a crankpin journal, wherein the crankpin journal is coupled to a crankpin of a crankshaft and is coupled to the upper link by an upper pin, and a control link is coupled to an eccentric cam of a control shaft that is supported by an engine block and coupled to a control pin boss by a control pin. The crankpin journal of the lower link is arranged and dimensioned relative to the upper pin such that a projection area defined by projecting the width of the upper pin along a direction line passing through a center of the piston pin and a center of the upper pin does not obscure an area defined by the crankpin during operation of the crankshaft as viewed in an axial direction of the crankpin.

Abstract: A system includes: an electrolytic cell for electrolytically converting water into a oxyhydrogen gas, the electrolytic cell having a gas outlet port; a fuel tank defining a fuel chamber therein and adapted to store hydrocarbon fuel in the fuel chamber in such a manner that the fuel chamber is divided by a body of the hydrocarbon fuel in the fuel tank into a liquid fuel-filled portion and a liquid fuel-free portion above the liquid fuel-filled portion, the fuel tank having upper and lower inlet ports; and a gas distributing unit including a control valve connected to the gas outlet port of the electrolytic cell and the upper and lower inlet ports of the fuel tank so as to direct first and second streams of the oxyhydrogen gas into the liquid fuel-free portion and the liquid fuel-filled portion of the fuel chamber, respectively.

Abstract: A cam angle mounting structure includes a cylinder head, a sensor bracket and a head cover. The cylinder head is configured and arranged to rotatably support a camshaft. The sensor bracket is configured and arranged to support a cam angle sensor. The sensor bracket is mounted on the cylinder head with the sensor bracket contacting the cylinder head. The head cover is non-rigidly mounted on the cylinder head and the sensor bracket via at least one gasket to cover a top opening of the cylinder head with a space being formed around the at least one gasket between the head cover and the cylinder head and between the head cover and the sensor bracket.

Abstract: A ductile repair cylinder liner for a diesel engine, the cylinder liner having an additional cooling groove with a parabolic varying cross-section machined into the outer surface of the cylinder liner immediately below the radially extending locating flange for the liner.

Abstract: A vehicle temperature control system comprising an internal combustion engine with an engine block and with a cylinder head, a heat source for heating a heat transfer medium, a heat exchanger arrangement for the transfer of heat transported in the heat transfer medium to air to be introduced into a vehicle interior, and a valve arrangement, by means of which the heat transfer medium heated by the heat source can be fed selectively, at least in part, to a first heat transfer region, provided in the region of the cylinder head, of the internal combustion engine, without being conducted into a second heat transfer region, provided in the region of the engine block, of the internal combustion engine.

Abstract: An Elevated Expansion-Ratio Internal Combustion Engine has a substantially standard repeating four-stroke sequence for each of a plurality of cylinders. The head of each cylinder has an intake valve, a combustion-gas exhaust valve, and a vapor return valve. A return manifold for vapor connects from respective ones of the cylinders via a plurality of valve assemblies, each of which includes the return valve, into a passage ahead of a beginning portion of an intake manifold. Each valve assembly also has a discharge valve coupled to the return valve via a holding tank for cylinder vapor or gas. Valve stems of the discharge and return valves are coaxial in a single section valve housing or spaced-apart in a two-section valve housing. A quantity of the vapor is received into the holding tank during the compression stroke, and subsequently transferred via the discharge valve to the return manifold.

Abstract: A method of detecting whether liquefied fuel exists in a canister purge line includes, if a fuel level in a fuel tank is higher than a pre-set level, opening a purge control valve for a time. A difference is calculated between the air-fuel ratio before and after opening the purge control valve. If the difference is less than or equal to a first value and the air-fuel ratio after opening the purge control valve is less than or equal to a second value, then it is deemed that liquefied fuel exists in the canister purge line. If liquefied fuel is deemed to exist in the canister purge line, the purge control valve may be closed for a certain amount of time.

Abstract: An intake manifold assembly includes a housing, a shaft assembly, and an intake insert. The shaft assembly has a metal shaft with bearings located at each end to provide hard mounting surfaces for the shaft assembly when assembled in the housing. The bearings support the shaft within the housing and allow the shaft to freely rotate. Bushings are spaced along the shaft to absorb vibrations and assist is providing a low friction surface for shaft assembly rotation. Journal pockets in the housing and in the intake insert surround the bushings. Isolators located within the journal pockets and housing surround the bushings and assist in dampening vibrations.

Abstract: An internal combustion engine (200) includes a coolant pump (212) having a pump outlet (214), and a first exhaust gas recirculation (EGR) cooler (206) fluidly connected to the pump outlet (214). A crankcase (202) is fluidly connected in parallel with the EGR cooler (206) to the pump outlet (214) for receiving coolant therefrom. A cylinder head (204) is fluidly connected to the crankcase (202) for receiving coolant therefrom. A thermostat (232) is fluidly connected between the cylinder head (204) and the coolant pump (212). A valve system (238) has a first selectable position fluidly connecting the flow from the first EGR cooler (206) to the flow in the cylinder head (204), and a second selectable position fluidly connecting the flow from the first EGR cooler (206) to the thermostat (232) in bypassing relation to the cylinder head (204). Each of the first or second position is effected in response to an engine operating parameter.

Abstract: The invention relates to a cooling module for an engine (1) of a motor vehicle. Said cooling module comprises a heat exchanger (4), at least one fan (16) and a coolant pump (8), whereby a modular frame (3) forms an integral part of the cooling module (2) and the coolant pump (8) is disposed within and/or on said modular frame.

Abstract: A system for retrofitting an internal combustion engine to use a proportion of hydrogen gas and existing fossil fuel is disclosed. The system is comprised of a source of hydrogen gas and means for delivering hydrogen gas to the combustion chamber of the engine. The engine operating parameters are adjusted and the delivery of hydrogen is controlled to provide selective introduction of hydrogen gas throughout the engine's operating cycle. The source of hydrogen gas can comprise an onboard hydrogen reformer, or hydrogen and carbon monoxide can be reformed inside the cylinder from an on board carrier of hydrogen. A single point injector placed at the intake manifold in close proximity to the engine intake valve can be used to mix the hydrogen gas to the air/fossil fuel mixture or sequential injectors can deliver hydrogen in close proximity to each engine intake valve, or directly into each cylinder.

Abstract: This invention produces a variable compression ratio in internal combustion engines, based on a sliding concentric piston which moves up by an internal spring and down by the different changing pressures over the concentric piston head, within the combustion chamber. This invention changes the compression ratio in an instantaneous and continuous way, depending directly on the pressure of the fuel mixture load in the combustion chamber.

Abstract: A dual-circuit cooling system for a vehicle is disclosed. One of the circuits may be used to manage the temperature of the engine while the other circuit may be used to manage the temperature of a component other than the engine. An associated method is disclosed.

Abstract: A combustion engine system comprises a plurality of cylinders configured to combust a mixed fuel to produce an exhaust gas and at least one reforming cylinder configured to receive a first portion of a fuel and deliver a reformed hydrogen-containing gas. The hydrogen-containing gas is introduced into a second portion of the fuel to form the mixed fuel to reduce emission from the combustion engine system.