Intake air pressure of an internal combustion engine is detected at a plurality of timings during a full stroke, a threshold pressure is set between the minimum and maximum values of detected intake air pressures, detected intake air pressures lower than t...

The present device is constituted such that a plunger pump P is constituted by a cylinder 8, a plunger 10, which is slidably mounted within this cylinder to form a pressure chamber 9, and a solenoid coil 11, which drives this plunger; at the lower section ...

In the present invention, an electronically controlled fuel injection device is constructed from a plunger pump 800, a circulation passage 140 which circulates fuel that has been pressurized in the initial region of the pressure-feeding stroke, a valve bod...

The throttle valve control device of the present invention comprises a structural body 24 in which a throttle valve 21, a throttle shaft 22 and a throttle lever 23 are integrally connected, a return spring 26, one end of which is latched to the structural ...

In the present apparatus, a bypass exhaust pipe which communicates between the cylinder bore and the exhaust passage is disposed in the region of bottom dead center of the piston in an engine that comprises a piston that performs a reciprocating motion bet...

An intake pressure sensor for sensing the intake pressure in an intake pipe (11) used as information for controlling the operation of an engine comprises an intake pressure sensor (12) for sensing the absolute intake pressure, a reference voltage power sup...

In order to provide an internal pressure sampling device for an intake pipe of an internal combustion engine, capable of sampling the pressure within the intake pipe 10 in a highly precise manner even when the pressure sensor 14 is located away from the in...

A high-pressure fuel pump, high-pressure fuel filter and fuel pressure regulator are housed inside a case having resistance to corrosion and rust caused by salt water damage, shielded from the outside atmosphere. A position above a fuel level of a fuel tan...

A structure for coupling a throttle valve (12) and a throttle shaft (13) in a throttle body reliably receives thrust force applied to the throttle shaft (13), and assures smooth rotation of the throttle shaft (13) and a wide open area of a bore when the th...