| 摘要 |
A fuel supply control method for multicylinder internal combustion engines, includes calculating the quantity of fuel being supplied to the engine in response to operating conditions of the engine, and sequentially supplying quantities of fuel corresponding to the calculated values into respective corresponding ones of the cylinders. The fuel quantity is calculated in synchronism with generation of pulses of a timing signal equal in number to the number of the cylinders at predetermined crank angles of the engine per one cycle of the engine. When a calculation started upon generation of an immediately preceding pulse of the timing signal is completed before a present pulse of the timing signal is generated, the supply of fuel is started in a quantity corresponding to a calculated value obtained by the same calculation, immediately upon completion of the calculation, whereas when the present pulse of the timing signal is generated before completion of the calculation started upon generation of the immediately preceding pulse of the timing signal, the supply of fuel is started in a quantity corresponding to a calculated value obtained by a latest calculation effected before the generation of the present pulse of the timing signal, immediately upon the generation of the present pulse of the timing signal, thereby minimizing fluctuations in the air-fuel ratio at transition from a low engine speed region to a high engine speed region and vice versa. |
