Electronic control fuel injection system |
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| 申请号 | JP11884878 | 申请日 | 1978-09-27 | 公开(公告)号 | JPS5546033A | 公开(公告)日 | 1980-03-31 |
| 申请人 | Nissan Motor Co Ltd; | 发明人 | NAGAISHI HATSUO; | ||||
| 摘要 | PURPOSE: To provide an optimum system specially with a simple construction for an engine having a small number of cylinders by controlling accurately the air fuel ratio at a desired ratio for the range from a low intake air volume to a large volume allowing to improve a fuel cost efficiency and an exhaust gas mission. CONSTITUTION: An intake passage 1 of an engine is incorporating sequently an air cleaner 3, Karman's vortex sensor 4, and a throttle valve 5. Said sensor 4 is configured permitting to provide a vortex detection unit 4c for a penetration hole 4b, Karman's vortex generation being formed in a wave shape with a signal processing circuit 7 for detecting a frequency of Karman's vortex generation. The output of the sensor 4 is, then, inputting to a fuel injection control circuit 11 as an intake air signal by passing through a discrimination circuit 10. In this case, in a throttle valve high opening zone the output of a flow arithmetic circuit 13 where the intake air volume is computed from the output of a throttle valve opening sensor 9 and an engine speed sensor 12 in place of said sensor 4 is fetched as an intake air volume signal through the discrimination circuit 10. COPYRIGHT: (C)1980,JPO&Japio |
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