公开(公告)号：US4671237A

公开(公告)日：1987-06-09

申请号：US877475

申请日：1986-06-23

Applicant: Nabuo Miura ,  Norihisa Ishii ,  Sumitaka Ogawa

Inventor： Nabuo Miura ,  Norihisa Ishii ,  Sumitaka Ogawa

IPC: F02P3/08 ,  F02P3/09 ,  F02P5/15 ,  F02P11/02 ,  F02P5/145

CPC classification number: F02P3/093 ,  F02P11/02 ,  F02P3/0838 ,  F02P5/1506 ,  Y02T10/46

Abstract: To obtain optimum combustion of fuel in an internal combustion engine and prevent the occurrence of reverse torque therein, an ignition timing control system having a pulse generating circuit for generating first and second timing pulses corresponding to respective predetermined crank angles of the engine includes means for producing all essential signals and, hence, for setting maximum delay angle ignition timing, based on a reference which is the leading edge of the second timing signal, which edge is unaffected by unstable engine rotation as when the engine is started. To simplify and reduce circuitry, an ignition signal generating circuit and a reverse torque preventing circuit are integrated and adapted to perform both functions.