- 专利标题: Apparatus for estimating exhaust gas recirculation quantity
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申请号: US13480641申请日: 2012-05-25
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公开(公告)号: US09726093B2公开(公告)日: 2017-08-08
- 发明人: Hiroyuki Takezoe , Hiroshi Katsurahara , Chika Ozaki
- 申请人: Hiroyuki Takezoe , Hiroshi Katsurahara , Chika Ozaki
- 申请人地址: JP Kariya
- 专利权人: DENSO CORPORATION
- 当前专利权人: DENSO CORPORATION
- 当前专利权人地址: JP Kariya
- 代理机构: Nixon & Vanderhye P.C.
- 优先权: JP2011-119729 20110527; JP2012-083572 20120402
- 主分类号: G06G7/48
- IPC分类号: G06G7/48 ; F02D41/00 ; F02D21/08 ; F02D41/14 ; F02M26/06 ; F02M26/35
摘要:
In an EGR system, a quantity of exhaust gas passing through an EGR valve is computed by an EGR valve model simulating a behavior of the recirculated exhaust gas passing through the EGR valve. An exhaust gas quantity flowing into a cylinder is computed by an EGR-gas-delay model simulating a behavior of the exhaust gas passing through the EGR valve and the throttle valve and then flows into a cylinder. The EGR-gas-delay model includes a confluent-delay model simulating a behavior of EGR gas passing thorough the EGR valve and flowing into the intake passage upstream of the throttle valve; an intake-pipe-delay model simulating a behavior of EGR gas flowing in the intake passage and passing through the throttle valve; and an intake-manifold-delay model simulating a behavior of EGR gas which passes through the throttle valve and then flows into the intake passage downstream of the throttle valve.