Abstract: A control system for an internal combustion engine where when the engine is decelerating the amount of intake air supplied to a combustion chamber is controlled. A target auxiliary intake air amount SAIRCMD necessary for preventing misfiring of the engine by supplying only an auxiliary intake air amount to a combustion chamber and a target intake air amount GAIRCMD which is a target value of the amount of intake air supplied to the combustion chamber are calculated according to the state NE, AP of the engine. When the engine is decelerating, and misfires, misfire avoidance control is executed controlling an auxiliary intake air amount control valve to be more opened such that the auxiliary intake air amount becomes the target auxiliary intake air amount SAIRCMD and a throttle valve to be more closed such that the amount of intake air supplied to the combustion chamber becomes the target intake air amount GAIRCMD.

Abstract: The present invention provides an internal combustion engine comprising an engine body 100, an overhang 101 projecting from a cylinder row end the engine body 100 and extending from an intake side 21 to an exhaust side 23 of the engine body, and an EGR pipe 41 disposed in a space 102 defined under the overhang 101 with a gap 103 between the EGR pipe 41 and the cylinder row end of the engine body, thereby avoiding the excessive cooling of EGR gas passing through the EGR pipe 41 while reducing a length of a passage defined by the EGR pipe 41, and preventing members disposed near the EGR pipe 41 from being damaged by heat.

Abstract: A control system for an internal combustion engine where when the engine is decelerating the amount of intake air supplied to a combustion chamber is controlled. A target auxiliary intake air amount SAIRCMD necessary for preventing misfiring of the engine by supplying only an auxiliary intake air amount to a combustion chamber and a target intake air amount GAIRCMD which is a target value of the amount of intake air supplied to the combustion chamber are calculated according to the state NE, AP of the engine. When the engine is decelerating, and misfires, misfire avoidance control is executed controlling an auxiliary intake air amount control valve to be more opened such that the auxiliary intake air amount becomes the target auxiliary intake air amount SAIRCMD and a throttle valve to be more closed such that the amount of intake air supplied to the combustion chamber becomes the target intake air amount GAIRCMD.

Abstract: The present invention provides an internal combustion engine comprising an engine body 100, an overhang 101 projecting from a cylinder row end the engine body 100 and extending from an intake side 21 to an exhaust side 23 of the engine body, and an EGR pipe 41 disposed in a space 102 defined under the overhang 101 with a gap 103 between the EGR pipe 41 and the cylinder row end of the engine body, thereby avoiding the excessive cooling of EGR gas passing through the EGR pipe 41 while reducing a length of a passage defined by the EGR pipe 41, and preventing members disposed near the EGR pipe 41 from being damaged by heat.

Abstract: A fluid machine according to the present invention has an expansion device for collecting waste heat from an internal combustion engine and converting the collected heat energy into mechanical rotational force, an electric rotating device selectively operating as an electric power generator and as an electric motor, and a pump device for pressurizing refrigerant for Rankine cycle, wherein those components are operatively connected with each other by a single rotating shaft. When starting up Rankine cycle, the electric rotating device is operated as the electric motor, so that the pump device is driven to pressurize and pump out high pressure refrigerant. Once the expansion device starts its operation, the electric rotating device is rotated by the expansion device and therefore the operational mode of the electric rotating device is switched over to the power generating mode.

Abstract: A fluid machine according to the present invention has an expansion device for collecting waste heat from an internal combustion engine and converting the collected heat energy into mechanical rotational force, an electric rotating device selectively operating as an electric power generator and as an electric motor, and a pump device for pressurizing refrigerant for Rankine cycle, wherein those components are operatively connected with each other by a single rotating shaft. When starting up Rankine cycle, the electric rotating device is operated as the electric motor, so that the pump device is driven to pressurize and pump out high pressure refrigerant. Once the expansion device starts its operation, the electric rotating device is rotated by the expansion device and therefore the operational mode of the electric rotating device is switched over to the power generating mode.

Abstract: A control apparatus for a variable displacement pump includes a variable displacement pump having an inlet port and a discharge port driven by an external engine. A piston assembly is provided for varying the amount of displacement of the pump. The control apparatus further includes a switching valve for switching operational fluid which is to be applied to and operates the piston assembly, an additional pump a control pressure a magnitude of which is proportional to the rotational speed of the external engine, a balance piston for transducing the control pressure from the additional pump into a force and for applying the force to one end of the switching valve. A discharge line is provided connecting the discharge port of the variable displacement pump with an external load, and a pilot line is branched off from the discharge line into the switching valve for applying a pressure in the discharge line to the other end of the switching valve.

Abstract: A fuel injection system according to the present invention comprises a fuel injection nozzle for injecting a supplementary fuel prior to injection of a main fuel, a distributor-type fuel injection pump for supplying the main fuel to the nozzle, a supplementary fuel feed pump for delivering the supplementary fuel to the nozzle, a relief valve for adjusting the pressure of the fuel from the feed pump to a fixed level, and a supplementary fuel feed valve disposed between the relief valve and the nozzle. The open period of the feed valve is controlled in accordance with the operating state of the engine.

Abstract: A variable displacement fluid pump comprises a rotor rotatably disposed within a housing, an eccentric ring movable close to and apart from the rotor to change a first eccentricity between a center of an inner periphery of the eccentric ring and a fixed center of rotation of the rotor so as to vary a displacement of the pump, and a plurality of pumping chambers each having a variable volume which changes sequentially to introduce thereinto fluid from an inlet port and to discharge therefrom fluid to a discharge port as the motor rotates. The rotor is so disposed that the fixed center of rotation of the rotor is spaced apart by a predetermined second eccentricity from a locus of the center of the inner periphery of the eccentric ring towards the discharge port.

Abstract: A fuel injection apparatus for an internal combustion engine arranged so as to inject different types of fuel in a given order has fuel injection nozzles respectively corresponding to cylinders of the internal combustion engine, compressors for respectively delivering an auxiliary fuel to the fuel injection nozzles, and a main fuel injection pump for compressing and delivering a main fuel to the fuel injection nozzles at respective given timings. Each fuel injection nozzle has a fuel reservoir around the distal end portion of a nozzle needle in the vicinity of a fuel injection port. The auxiliary fuel from the corresponding compressor is delivered to a portion of the fuel reservoir which is adjacent to the fuel injection port. A second passage is formed to receive the auxiliary fuel from a portion of the fuel reservoir which is adjacent to the fuel injection port. A first passage is formed to communicate with a portion of the fuel reservoir which is spaced apart from the fuel injection port.

Abstract: A malfunction procedure indicating system which monitors continuously the condition of a plurality of inspection items associated with the operation of a vehicle, whereby when the existence of a malfunction in at least one of the plurality of inspection items is detected, a first procedure corresponding to the malfunction is indicated by both verbal representation and visual display during the operation of the vehicle and a second procedure following the first procedure is also indicated by both verbal representation and visual display.