초록 ▼

In an unthrottled fuel injection type internal combustion engine, a controlled injection logic to generate a first pulse train whose frequency varies with the accelerator position, N cylinder chambers (CCH\s) 11, FIG. 1 ), each with a piston, and a distributor (111, FIG. 4) comprising N first device

In an unthrottled fuel injection type internal combustion engine, a controlled injection logic to generate a first pulse train whose frequency varies with the accelerator position, N cylinder chambers (CCH\s) 11, FIG. 1 ), each with a piston, and a distributor (111, FIG. 4) comprising N first devices and a rotor 109 for generating a second pulse each rotation past a first device, N fuel injection/ignition devices (FIGS. 1-2) each having a fuel ignition element (FIE) extending into a CCH to ignite the injected fuel and a fuel injector for injecting fuel towards each FIE at certain time intervals after the rotor passes the associated first device, a first counter for measuring, in time/degree of engine crankshaft rotation (ECR), the time required for M°of ECR, and for determining the rotor angular velocity. Second logic compares the rotor and accelerator pulses counted during a current time interval with the rotor and accelerator pulses counted in the prior time interval to determine if an advance T or a retardation of fuel injection is required and to calculate T in terms of the number of pulses of a given pulse train occurring after a calculated time interval Y after the second pulse caused by the rotor passing the associated first device, and third logic to compute fuel injection time Tx in response to the throttle position, and fourth logic responsive to the end of each time period for implementing the newly computed fuel injection parameters.

대표청구항 ▼

In a fuel injection type internal combustion engine comprising an acelerator, a distributor having a rotatable rotor, and N pulse producing devices each positioned at the outer end of said rotor and each of a type which will produce a rotor pulse each time said rotor passes thereby, a piston and an

In a fuel injection type internal combustion engine comprising an acelerator, a distributor having a rotatable rotor, and N pulse producing devices each positioned at the outer end of said rotor and each of a type which will produce a rotor pulse each time said rotor passes thereby, a piston and an associated cylinder chamber with the strokes of each piston bearing a predetermined positional relation with said rotor as the rotor passes the associated pulse producing device and N fuel ignition elements each extending into the cylinder chamber, and a fuel injector device for injecting fuel directly past each fuel ignition element at predeterminable time intervals with respect to the time said rotor passes a given pulse producing device to obtain a substantially non-stoichiometric mixture of fuel and air and with said injected fuel being ignited by each fuel ignition element during the entire fuel injection time, an electronic injection system for controlling the time of beginning and the time of duration of the injection of fuel into N each of said cylinder chambers and comprising: counter means for generating a series of pulse trains of different frequencies; first logic means comprising a tachometer means and a computer means responsive to a pulse train consisting of first pulses of a first frequency generated by said counter means and the occurrence rate of said rotor pulses to compute the time in milliseconds per M degrees of engine crankshaft revolution, the instantaneous angular velocity of the engine crankshaft revolution per degree in time per degree at any given time, and the number of rotor pulses occurring during a given time interval Z at periodic intervals and determined by selected pulses generated by said counter means with both milliseconds per M degrees and milliseconds per degree being measured by the number of said first pulses occuring during said milliseconds per M degrees and milliseconds per degree time periods; first means responsive to the degree of depression of said accelerator to generate a second pulse train of throttle pulses whose frequency varies with said degree of depression; second means responsive to said frequency of said second pulse train to compute the length of time of fuel injection Tx; third means for measuring the number of throttle pulses over said given time interval Z at periodic intervals; fourth means responsive to the changes or lack of changes in the number of rotor and throttle pulses counted during each current time interval compared to the number of rotor and throttle pulses counted during the immediately prior time interval Z for determining whether an advance or a retarding of the beginning of fuel injection is required; fifth means for calculating the amount of advance T, if required, measured from a time Y, which in turn is measured from the time of occurrence of the pulse produced by the rotor passing the pulse producing device associated with the cylinder chamber in which the fuel is to be injected; sixth means for implementing each newly computed beginning and time of duration of fuel injection; and seventh means for resetting said counter means to zero at a predetermined short period of time after the expiration of the time interval Z.