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公开(公告)号：US5402760A
公开(公告)日：1995-04-04
申请号：US63787
申请日：1993-05-20
CPC分类号： F02D41/3836 , F02D41/20 , F02D41/403 , F02B2075/027 , F02B3/06 , F02D2041/2027 , F02D2041/2055 , F02D2200/0406 , F02D2200/0602 , F02D2250/04 , F02D41/402 , Y02T10/44
摘要： A pilot injection amount QP, a main injection amount QM, and a lag TDF between the main and pilot injections are obtained (S130). The pilot injection initiating timing TTP, the pilot injection period TP, the main injection initiating timing TTM, and the main injection period TM are obtained on the basis of the pilot injection amount QP, the main injection amount QM, the fundamental injection initiating timing KT and the common rail pressure Pc (S150). The main injection period correction amount .DELTA.TQM and the injection initiating timing correction shift amount .DELTA.T are then obtained on the basis of the pilot injection period TP and the time lag TDF (S160). Finally, modified by these correction amount .DELTA.TQM and the shift amount .DELTA.T, the pilot injection initiating timing TTP', the main injection initiating timing TTM' and the main injection period TM' are obtained as final values (S170). With this arrangement, a fuel injection control apparatus for an internal combustion engine becomes capable of reducing adverse affects of residual magnetic flux and the pressure pulsation in the fuel injection initiating timing of the main injection, thereby suppressing smoke generation and realizing an optimum fuel injection.
摘要翻译： 获得主喷射量和引燃喷射之间的先导喷射量QP，主喷射量QM和滞后TDF（S130）。 基于先导喷射量QP，主喷射量QM，基本喷射开始时刻KT，得到喷油喷射开始时刻TTP，喷油喷射期间TP，主喷射时刻TTM，主喷射期间TM 和共轨压力Pc（S150）。 然后根据导频喷射周期TP和时滞TDF获得主喷射周期校正量DELTA TQM和喷射起动定时校正偏移量DELTA T（S160）。 最后，通过这些校正量DELTA TQM和偏移量DELTA T进行修正，获得引导喷射启动定时TTP'，主喷射起动定时TTM'和主喷射期间TM'作为最终值（S170）。 通过这种结构，内燃机的燃料喷射控制装置能够减少主喷射的燃料喷射开始时刻的残留磁通和压力脉动的不利影响，从而抑制烟雾产生并实现最佳燃料喷射。
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