A main CPU (26) transmits data used in determination of whether or not a target throttle opening degree calculation logic and an estimated target throttle opening degree calculation logic are normal (a target degree and an estimated target degree of thrott...

The invention relates to a hardware architecture of a system (1) for driving injection in internal combustion engines (2), of the type intended to cooperate with an engine electronic control unit (ECU) by driving corresponding injection drivers (3). The sy...

A hybrid fuel injection system which allows electronic control over the injection processes, wherein selective rate shaping and multiplicity of injections is possible. The hybrid fuel injection system consists of an add-on common rail system (CRS) which pr...

Method for testing motor vehicle components in which: vehicle fault specific data are input; a fault detection process is carried out; if a fault is detected, a fault test is carried out; an abort signal is generated for a further fault test if input data ...

A fuel injection control device is provided with a plurality of pressure sensors 44 and 45 that individually detect pressures of fuel in a common rail 25 and an electronic control unit (ECU) 46. When respective detected values of two fuel pressure sensors ...

The operating method has fuel fed from a metering device (15) to a high pressure pump (16), supplying the fuel to a common-rail pressure reservoir (17) for the fuel injection jets (21). The quantity of fuel provided by the metering device is limited by the...

Fuel of a high pressure is supplied from a high-pressure fuel injection pump 5 into a common-rail 3, and is, then, supplied to the fuel injection valves 1 from the common-rail. A control circuit (ECU) 20 compares a change in the fuel pressure in the common...

A diagnostic apparatus of an assist air supply system of an engine (1), in which an AAI solenoid valve is provided in an assist air passage (64) and when diagnosing, a difference between a maximum value of intake manifold pressure when the AAI solenoid val...