Diesel Engine diagnosing device

Abstract

A Diesel engine diagnosing device, particularly, a device for diagnosing the timing of a fuel injection is disclosed. The device according to the present invention comprises a transducer to convert the injection pressures into an electrical signal, a first pulse generator to produce a first pulses of a predetermined pulse width, the first pulses being produced at the moment of a building up of the primary injection pressures, and a second pulse generator to produce second pulses which are generated when triggered by the leading edges of said first pulses and which can be set for a desired mark-space ratio. And, a first marking provided on the stationary part of the engine and second marking provided on the rotary part of the engine are lighted by an electronic flash emitter which flashes as triggered with the trailing edge of said second pulses. The device further has an injection timing indicator which displays the integral value of the output signal produced from said second pulse generator. Thus, the injection timing of the engine can be known by adjusting the mark-space ratio of the second pulses for establishing the first marking and the second marking in a positional relationship and for reading the indication on the indicator.

Dependencies are inferred from the claim text.