초록 ▼

An i.c. engine fuel control system includes a closed loop roughness control, utilizing a roughness sensor circuit, an integrator which integrates the error between the roughness signal and a reference signal and modifies the fuel flow to the engine via a main fuel control with a variable frequency c

An i.c. engine fuel control system includes a closed loop roughness control, utilizing a roughness sensor circuit, an integrator which integrates the error between the roughness signal and a reference signal and modifies the fuel flow to the engine via a main fuel control with a variable frequency clock. During acceleration and deceleration the closed loop is interrupted by means of a circuit including two differentiators which are sensitive to throttle opening (speed demand) and actual speed respectively, and switches controlled by these differentiators.

대표청구항 ▼

An internal combustion engine fuel control system comprising: engine roughness sensing means for producing a roughness signal representing the change in speed of the engine between different engine shaft positions in relation to the engine speed; a fuel control circuit, connected to said roughness s

An internal combustion engine fuel control system comprising: engine roughness sensing means for producing a roughness signal representing the change in speed of the engine between different engine shaft positions in relation to the engine speed; a fuel control circuit, connected to said roughness sensing means for controlling the rate at which fuel is supplied to the engine; means for generating a speed demand signal which is supplied to said fuel control circuit; and means, responsive to the rate of change of said demand signal and to the rate of change of the engine speed, for interrupting the effect of the roughness sensing means on the fuel control circuit during decelaration and/or acceleration.