发明名称 INTAKE CONTROL DEVICE OF ENGINE
摘要 PURPOSE:To contrive improvement of fuel consumption and reduction of NOx by providing an upstream and downstream fuel supply means and an EGR control means, and performing control so as to increase a fuel supply proportion in the upstream side fuel supply means while an EGR amount in light and intermediate load operational regions of an engine. CONSTITUTION:An upstream side injector 16 is provided upstream of an intake passage in a sufficiently long distance to an intake port 5 of an intake passage 10 and also arranging a downstream injector 17 in the vicinity of the intake port 5 in each cylinder-classified intake passage 11. An EGR control means for adjusting an exhaust gas recirculating amount is provided and constituted of a valve timing variable means 20 for variably changing opening/closing timing of an exhaust valve 8 to adjust an internal EGR amount by changing an overlapping amount of intake and exhaust valves. A control signal is output from an ECU 30 so as to increase a fuel supply proportion of the upstream injector 16 by increasing the exhaust gas recirculating amount in light and intermediate load operational regions of an engine.
申请公布号 JPH0460146(A) 申请公布日期 1992.02.26
申请号 JP19900173713 申请日期 1990.06.29
申请人 MAZDA MOTOR CORP 发明人 HITOMI MITSUO;MAMIYA KIYOTAKA;HAYASHI YOSHINORI
分类号 F02D41/02;F01L13/00;F02B27/02;F02D13/02;F02D21/08;F02D43/00;F02M25/07;F02M69/00 主分类号 F02D41/02
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