Abstract: A control valve unit for a liquid circuit of an internal combustion engine, includes a valve housing (1) having at least one inlet opening (2) or outlet opening (2?) and at least two outlet openings (31, 32, 33) or inlet openings (31?, 32?, 33?) and at least two closing elements (41, 42, 43) actuated by a control device (22). The closing elements selectively open or close an associated outlet or inlet opening. The closing elements may be continuously adjusted between maximum open and closed positions. The control device (22) includes at least one displaceable or rotatable cam (6) and includes at least two cam tracks (71, 72, 73), each of which is assigned to a closing element (41, 42, 43) and acts on at least one driving pin (11) that is in contact with said closing element (41, 42, 43). The cams (6) are adjusted by an actuator (8).

Abstract: An engine cooling device including a water pump, a radiator, an exhaust heat recovery unit, and a coolant circulation circuit for circulating a coolant in these apparatuses includes a flow rate limiting means that limits the flow rate of the coolant that circulates in the exhaust heat recovery unit in the case where a temperature of a sensor element of an A/F sensor, that is disposed downstream of the exhaust heat recovery unit in an exhaust path, is below a preset activation temperature. An extent of opening of a second switching valve is made smaller in the case where the temperature of the sensor element is below the activation temperature than in the case where the temperature is equal to or higher than the activation temperature.

Abstract: A structure of an engine includes: a crankshaft module configured to convert reciprocal motion of a piston into rotational motion; and a first balance shaft module and a second balance shaft module configured to reduce vibration of the engine, in which the first balance shaft module is directly gear-meshed with the crankshaft module, and the second balance shaft module is gear-meshed with the crankshaft module through an intermediate gear.

Abstract: A cover structure of a plug hole provided to a cylinder head cover of an engine includes: a plug cap detachably attached to the plug hole; an outer cover covering at least an upper side of the plug cap; and a seal member provided on an upper face of the cylinder head cover and surrounding a periphery of the plug hole. In the cover structure, the outer cover has a projection portion projected toward the cylinder head cover, and the seal member is pressed to the upper face of the cylinder head cover by the projection portion.

Abstract: The invention concerns an internal combustion engine and a method of producing the engine in which the engine has at least one cylinder and with a crank drive comprising a crankshaft, in which the crankshaft mounted in the crankcase has an associated crankshaft throw, the crankshaft throws being arranged spaced apart along the longitudinal axis of the crankshaft, and at least one compensation weight serving as imbalance is arranged on the crankshaft on the side opposite at least one crankshaft throw. The compensation weight has an arcuate form on the outward-facing side, the outside of which running in the peripheral direction has a constant distance S from a reference axis which runs parallel to and spaced by a distance ? from the longitudinal axis of the crankshaft, wherein the reference axis is arranged on the side facing away from the compensation weight, starting from the longitudinal axis of the crankshaft.

Abstract: A method for purging fuel vapors, comprising: purging fuel tank vapors directly from a fuel tank to an engine intake, bypassing a canister, via a venturi, while drawing canister vapors via the venturi into the purged fuel tank vapors en route to the engine intake. In this way, fuel tank vapors may be used to enable purging of a fuel vapor canister, even under conditions where there is insufficient manifold vacuum to enable a canister purge routine. By increasing the frequency of purge opportunities, bleed emissions from a saturated canister may be reduced.

Abstract: To effectively improve flame propagation speed utilizing active species in an internal combustion engine 10 that promotes combustion utilizing active species. The internal combustion engine 10 is provided with an internal combustion engine main body 11 that combusts fuel air mixture in a combustion chamber 20 and an active species generation unit 13 that generates active species in a region which a flame surface has not yet reached during flame propagation in the combustion chamber 20. In a region which the flame will eventually pass through, the active species generation unit 13 generates the active species while the flame surface has not yet reached the region.

Abstract: A tank passage communicates a canister housing with a fuel tank. A purge passage communicates the canister housing with an intake air system. An atmospheric air passage communicates the canister housing with an atmosphere. A valve housing accommodating a valve element is located in a recessed portion defined with a first inner wall and a second inner wall. A seal member is located on a radially outside of the valve housing to seal the recessed portion. The first inner wall has a first opening to communicate the canister housing with the recessed portion. The second inner wall has a second opening to communicate the recessed portion with the atmospheric air passage. The first opening or the second opening is defined around a valve seat. The valve element is seated on and lifted from the valve seat to control communication between the canister housing and the atmospheric air passage.

Abstract: A casing structure of an automotive internal combustion engine includes an upper/lower divided crankcase structure. A crankshaft and a first transmission shaft of a pair of transmission shafts parallel to the crankshaft of a transmission are axially supported by a dividing surface of the upper crankcase and the lower crankcase. The dividing surface of the crankcase is inclined so that a second transmission shaft axially supported by the upper crankcase above the first transmission shaft is below the crankshaft. A cylinder is formed on the upper crankcase so that a cylinder axial line is orthogonal to the dividing surface.

Abstract: A hybrid vehicle intermittently operates and stops an engine, travels through control over torque generated by the engine and torque generated by a second motor generator, causes a fuel vapor gas purge system to carry out purging of fuel vapor gas when a predetermined condition, including a condition that a coolant temperature is higher than or equal to a permissible temperature, is satisfied, and sets the permissible temperature to a value lower when a specific driving operation state that includes a state where the number of times of accelerator operation per unit time is higher than or equal to a threshold has been detected than when the specific driving operation state has not been detected. When the specific driving operation state has been detected, the hybrid vehicle increases the updating rate of a concentration learned value of fuel vapor gas, and decreases the rate of increase in target purge rate.

Abstract: A device for cleaning of crankcase gas including a centrifugal separator having a housing and a separation chamber in which a rotor is arranged. The separator is connected to a gas inlet for conducting crankcase gas from the crankcase to the centrifugal separator and a gas outlet for conducting the cleaned gas from the separator. A motor is arranged to rotate the centrifugal rotor. A sensor is provided for detection of a parameter and is arranged to communicate with the control equipment. The control equipment is operatively connected to a valve for adjusting the flow of gas through the centrifugal separator. The control equipment is arranged to change the position of the valve in response to a detected change of the parameter such that the gas pressure in the crankcase is maintained at a predetermined value.

Abstract: A ventilation device including: a first enclosure including a first passage configured to be connected to a canister outlet and the atmosphere, and a normally closed shutter device configured to open to release the first passage; a second enclosure including a second passage configured to be connected to the canister inlet and a fuel tank, and a normally open shutter device configured to close to shut the second passage, the second passage being separate from and not in communication with the first passage; and a combined pressure/vacuum relief valve or OPR and UPR valve pair situated in or fastened to a bypass of the first passage configured to establish a connection between ends of the first passage when the shutter device is closed and when there is over- or under-pressure in the ends. A fuel system can include the device and a hybrid vehicle can include the fuel system.

Abstract: A valve actuation system for an internal combustion engine is disclosed. The engine has a first set of cylinders having a first set of exhaust valves and a second set of cylinders having a second set of exhaust valves. The valve actuation system for the exhaust valves includes one or more first cams having a compression-release lobe and a main exhaust lobe adapted to transfer valve actuation motion to the first set of exhaust valves, and one or more second cams having an early exhaust valve opening (EEVO) lobe and a main exhaust lobe adapted to transfer valve actuation motion to the second set of exhaust valves. The valve actuation system may provide any combination of (i) main exhaust valve actuation with or without compression release actuation with (ii) main exhaust valve actuation with or without EEVO for the two sets of cylinders.

Abstract: A vehicle fuel tank arrangement is provided for a fuel that includes at least a first fluid and a second fluid. The tank arrangement includes a tank and a partition wall arranged inside the tank in order to create at least a first compartment for storing the first fluid and a second compartment for storing the second fluid. The position of the partition all inside the tank can be changed to set the volume of the first compartment and the second compartment to predetermined values.

Abstract: The object of the present invention is a methane pressure reducer/regulator for feeding internal combustion engines which comprises a body divided into three chambers, communicating with each other by means of high resistance conduits and by means of an opening/closing element which is integral with an elastic diaphragm, whose surface is proportionally larger than the opening/closing element so that a modest pressure in the chamber upstream from the elastic diaphragm is sufficient to bend it, overcoming both the methane pressure resistance in the adjacent chamber, and the methane pressure resistance in the chamber directly connected to the tank(s), as well as the counter spring resistance. When the elastic diaphragm bends, it pushes a stem whose end is integral with the opening/closing element that allows or prevents the methane passage through a hole connecting the chamber from which methane is sent to the engine to the chamber wherein methane comes directly from the tank(s).

Abstract: The present invention relates to internal combustion engines and more particularly reciprocating piston engines utilizing Scotch yokes to translate rectilinear movement to rotary motion. In particular, the piston and/or pistons of the engine of the present invention can be placed in their topmost position for a period of time for the effective ignition and combustion of the air/fuel mixture for a given fuel charge, hence therefore providing an increased efficiency of the piston engine with a more efficient coupling between the piston and/or the power shaft driving the crank.

Abstract: An internal combustion engine having two cylinders, which are arranged in “V” configuration and accommodate respective pistons, and a first balancing body, which is fixed to a crankshaft at a first piston so that the first order reciprocating inertial forces of the first piston lie on a first straight line forming a first inclination angle which is not zero with the first cylinder; the combination of an angle between the cylinders with the first inclination angle is such that the first straight line on which the first order reciprocating inertial forces generated by the first piston lies is parallel to a second straight line on which the first order reciprocating inertial forces generated by the reciprocating motion of a second piston lie.

Abstract: Embodiments for selectively filling a cylinder block cooling jacket with oil are provided. In one example, a control unit may be rotated among a plurality of working positions to open up and/or block flow of oil into and out of the cylinder block cooling jacket.

Abstract: The character or nature of cooling water is correctly estimated. A cooling system for an internal combustion engine includes a radiator, a bypass passage which bypasses the radiator, a thermostat, and a control unit which changes a valve opening temperature of the thermostat. The cooling system for the internal combustion engine further includes an estimating unit which forbids valve opening of the thermostat and which estimates the character of the cooling water on the basis of temperature transition of the cooling water provided in this state.

Abstract: An internal combustion engine reformer installation comprises an internal combustion engine, a mixing device having a first feed conduit for a first substance flow and a second feed conduit for a second substance flow, wherein a mixture can be produced from the first and second substance flows in the mixing device, a reformer for reforming the mixture to afford a synthesis gas, a mixture conduit connected to the mixing device and the reformer, and a synthesis gas feed conduit connected to the reformer and the internal combustion engine. A first heat exchanger in heat-coupling relationship with the first feed conduit and a second heat exchanger in heat-coupling relationship with the second feed conduit are arranged in the synthesis gas feed conduit.