Abstract: A device capable of supplying an internal combustion engine 60 with a first fuel F1 of a high octane number fuel, and a second fuel F2 of a low octane number fuel or a raw fuel F0. The device is equipped with a cooling medium circulating path LL configured to perform heat exchange between a cooling medium for cooling the internal combustion engine 60 and a separator 20. The device adjusts a flow rate of the cooling medium in the cooling medium circulating path LL, so that a separator temperature T1 is contained in a predetermined temperature range, according to T1, a raw fuel temperature T2 and a cooling medium temperature T3.

Abstract: An air intake system for an internal combustion engine has a valve body that can open/close a passage cross section of a part of an air intake passage; a rotation shaft that extends to both sides of the valve body and supports rotation of the valve body; a valve accommodating recess that is formed on an inner wall surface of the air intake passage and accommodates therein the valve body; and a protruding line that is formed on an outer peripheral side surface of the valve body, which faces the valve accommodating recess, and extends along a shaft direction of the rotation shaft. The air intake system further has a communication passage that directly connects the valve accommodating recess and an intake port of the internal combustion engine.

Abstract: The present disclosure relates to an engine valve device including: engine valves; valve guides configured to guide a reciprocating motion of the engine valves; and stem seals fitting on one end of each of the valve guides and circumferentially covering the engine valves, in which the engine valves have micro-machined oil ports on the surfaces surrounded by the valve guides or the stem seals.

Abstract: A system for operating a rotating component. The system includes a rotating component, a motor driving the rotating component, a sensor detecting a stimulus related to the rotating component, and a controller. The controller receives an indication of the magnitude of the stimulus from the sensor and is configured to adjust a speed of the rotating component when the stimulus indicates the rotating component is operating at a resonant frequency.

Abstract: An engine lubrication system is provided. The engine lubrication system includes an oil pan housing a lubricant, an oil pump having a pick-up tube including an inlet submerged in the lubricant, and a heat pipe assembly including a fluidly sealed heat pipe coupled to the oil pan adjacent to the inlet of the pick-up tube.

Abstract: Breather mechanism includes a breather passage opening into a crankcase, a breather chamber communicating with the crankcase via the breather passage, and a valve provided in the breather chamber and openable to allow blow-by gas to flow from the crankcase into the breather chamber once inner pressure of the crankcase exceeds a predetermined value. When the engine is placed in a laterally laid-down position, entry, into the breather chamber, of lubricating oil is prevented by the breather passage. When the engine is placed in a vertically upright position, an outlet end portion of the breather passage is located above an inlet end portion of the breather passage.

Abstract: A fuel injection valve is mounted in a cylinder head by being inserted in an insertion hole provided in the cylinder head. A shoulder section is provided at the inlet portion of the insertion hole to be expanded in an annular shape. The fuel injection valve is provided with a stepped section expanded in diameter in a tapered manner to have a tapered surface facing the shoulder section. A vibration insulator is disposed between the stepped section and the shoulder section. The vibration insulator is provided with a circular annular tolerance ring making contact with the tapered surface of the fuel injection valve. A circular annular sleeve section coaxial with the tolerance ring is integrally formed on the tolerance ring to extend from the surface of a portion of the tolerance ring, the portion not facing the tapered surface of the fuel injection valve.

Abstract: An engine combustion cylinder is fluidly connectable to an intake system through an intake valve and to an exhaust system through an exhaust valve. A valve activation system is to activate the intake valve and the exhaust valve. The valve activation system is responsive to a controller providing command signals to the valve activation system such that, when the engine operates in a six-stroke combustion cycle, the intake valve is opened during a recompression stroke to allow a portion of the products from the first combustion stroke to exit the combustion cylinder and enter into the intake system.

Abstract: Methods and systems for controlling the operation of a dual mode engine accessory, such as a dual mode cooling pump. The dual mode device has two modes of operation, an electric motor operation and a mechanical pulley-driven operation. A friction clutch mechanism controlled by the control system is utilized to switch between the two modes of operation. The speed of the electrical motor can be changed to be substantially the same as, or changed in the direction of, the speed of the mechanical pulley-driven system.

Abstract: A powertrain cooling system includes a coolant pump and coolant flow passages. A first three-position valve is operatively connected with an outlet of the coolant pump and has a first, a second, and a third position to at least partially establish different coolant flow modes through the coolant flow passages. Coolant flow from the coolant pump is blocked from both the cylinder head and the engine block in a first coolant flow mode when the three-position valve is in the first position. Coolant flow from the coolant pump is provided to the cylinder head and is blocked from the engine block in a second coolant flow mode when the three-position valve is in the second position. Coolant flows from the coolant pump to the engine block and from the engine block to the cylinder head in a third coolant flow mode when the three-position valve is in the third position.

Abstract: A two-stroke, uniflow, full expansion internal combustion (IC) engine including a plurality of cylinders, including a cylinder wall and a cylinder head having an exhaust port, an exhaust valve disposed in the exhaust port, a fuel injector and a spark means disposed through the cylinder head, a piston mounted in the cylinder for reciprocal movement between a top dead center (TDC) position and a bottom dead center (BDC) position, and through a compression stroke and a power stroke, and a swirl inlet port passing through the cylinder wall at the bottom of the cylinder, wherein the swirl inlet port is covered and uncovered in response to the reciprocal movement of the piston. The exhaust port is held in an open position for a portion of the compression stroke movement of the piston, to provide a delay in the onset of the compression phase of the cylinder cycle.

Abstract: An oil supply device for a crankcase of an internal combustion engine feeds oil from a reservoir to a main oil duct of the crankcase. A filter switching device allows a selection from a plurality of oil filter units in the flow path of the oil to be selectively connected into the oil flow path, to set a proportion of the oil filter units to active and a proportion of the oil filter units to passive. A switching unit switches between the active and passive states and opens up a pressurized oil flow path to the active oil filter unit(s) and also a drainage flow path between the passive oil filter unit(s) and a drainage duct. An evacuation device drains or evacuates oil from the drainage duct which has accumulated at the passive oil filter unit(s).

Abstract: An engine system may include a thermostat casing connected to a first, second, third, and fourth flow channels, a valve guide in which a main valve that opens and closes the first flow channel is formed at one side, a closing valve that opens and closes the second flow channel is formed at the other side, and a bypass valve is formed adjacent to the closing valve, an elastic member that elastically supports the valve guide to enable the main valve to block the first flow channel and the closing valve to block the second flow channel, a driver that moves the valve guide so that the main valve opens the first flow channel and the closing valve opens the second flow channel according to a temperature of a coolant, and a control unit that controls the temperature and a flow of the coolant by controlling the driver.

Abstract: The present invention is directed to a dual fuel supply system for supplying fuel to a direct-injection system of a diesel engine. The dual fuel supply system includes a diesel supply system to supply diesel to the direct-injection system; and a mixed fuel supply system that is operatively able to supply a liquid fuel premixture of diesel and liquefied gaseous fuel to the direct-injection system at a supply pressure within a fuel demand pressure range of the direct-injection system and at a corresponding temperature range that retains the fuel premixture below its vapor temperature as it flows through the fuel path of the direct-injection system and the diesel engine. The dual fuel supply system is configured to permit selective change over between the diesel supply system and the mixed fuel system to supply the direct-injection system selectively with either diesel or liquid fuel premixture respectively.

Abstract: A method for controlling the power of an engine is provided. The method includes determining a baseline fuel amount, determining an engine cooling fan operating condition based on an engine operating parameter, determining an engine cooling fan command based on the engine cooling fan operating condition, determining an engine cooling fan power level based on the engine speed and the engine cooling fan command, determining an additional fuel amount based on the engine cooling fan power level, adding the additional fuel amount to the baseline fuel amount to create a compensated fuel amount, and providing the compensated fuel amount to the engine. An engine system, including an engine controller coupled to an engine, a fuel system and a hydraulic pump, is also provided. The engine controller includes a processor adapted to perform a set of instructions that controls the power of the engine.

Abstract: A piston cooling system includes: a nozzle pipe portion which communicates with an oil passage which is provided in an internal combustion engine and which extends towards an interior of a cylinder bore; and a flow path forming member which is fixed to a distal end portion of the nozzle pipe portion and in which a plurality of oil jetting paths are formed, wherein: the distal end portion comprises an expanded pipe portion where the nozzle pipe portion is expanded and the flow path forming member is fittingly inserted into the expanded pipe portion; the flow path forming member has a distal end face which is exposed to an exterior portion at a distal end side of the expanded pipe portion; and the flow path forming member is locked in the expanded pipe portion by deforming a distal end edge of the expanded pipe portion.

Abstract: A saddle-ride vehicle includes a radiator body having a first radiator and a second radiator each including a core composed of radiating fins and tubes, alternately laminated. The radiator body is disposed forward of an engine while sandwiching a down tube between the first and second radiators in a vehicle left-right direction with the down tube extending rearwardly and downwardly of a head pipe. The radiator bodies and an exhaust pipe connected to the engine are disposed in an overlapping manner when the vehicle is viewed in a plan view. The lower tank of the first radiator include an inlet for the coolant from a lower communicating radiator hose that allows coolant to flow from the lower tank of the second radiator and an outlet for the coolant to a lower end radiator hose that is connected from the lower tank of the first radiator to the engine.

Abstract: A thermostat housing is disclosed. The thermostat housing comprises a housing member. The housing member includes an inlet and an outlet to allow coolant to flow therethrough. The thermostat housing also includes least two thermostats within the housing member. The at least two thermostats have staggered opening temperatures. One of the at least two thermostats opens and controls a flow rate of coolant through the housing when the coolant is within a first predetermined temperature range. A single loop of coolant is being controlled within the housing member.

Abstract: Systems are disclosed to restrain movement of engine components in the event of a collision. A system may comprise an upper intake manifold; a cam cover; a shear catch located between the upper intake manifold and the cam cover; an upper component of the shear catch is arranged on the upper intake manifold; a lower component of the shear catch is arranged on the cam cover; and the upper component and the lower component are arranged opposite each other such that they engage when the upper intake manifold is subjected to shear forces. Variations to the size, arrangement, and shape of a shear catch are disclosed herein.

Abstract: A ringed coolant water passage 16 formed to surround a plurality of cylinders #1-#4 is provided. Two partitioning members having a larger thermal expansion coefficient as compared to that of a cylinder block 10, and separating the ringed coolant water passage 16 into first passage 22 and second passage 24 is provided. The first passage 22 exists mainly at one side of a longitudinal bore center plane which extends along the longitudinal direction of the cylinder block 10 while the second passage 24 exists mainly at the other side. An inlet which communicates with the first passage and an outlet which communicates with the second passage are provided. A cylinder head including a coolant water passage which opens to both of the first passage 22 and the second passage 24 is attached to the cylinder block 10.