发明授权
- 专利标题： Variable valve timing apparatus and control method therefor
- 专利标题（中）： 可变气门正时装置及其控制方法
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申请号： US12303341申请日： 2007-03-22
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公开(公告)号： US08047169B2公开(公告)日： 2011-11-01
- 发明人: Zenichiro Mashiki , Yasumichi Inoue , Noboru Takagi , Haruyuki Urushihata
- 申请人： Zenichiro Mashiki , Yasumichi Inoue , Noboru Takagi , Haruyuki Urushihata
- 申请人地址： JP Aichi-Ken
- 专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址： JP Aichi-Ken
- 代理机构： Sughrue Mion, PLLC
- 优先权： JP2006-157600 20060606
- 国际申请： PCT/JP2007/056761 WO 20070322
- 国际公布： WO2007/141952 WO 20071213
- 主分类号： F01L1/34
- IPC分类号： F01L1/34
摘要：
An ECU executes a program including the steps of: controlling, when the phase of an intake valve is a phase advanced relative to a threshold value CA (FF) (NO in S106), an electric motor operating an intake VVT mechanism by feedback control (S202); and controlling, when the phase of the intake valve is a phase retarded relative to the threshold value CA (FF) (YES in S106), the electric motor by feed-forward control (S200). Under the feed-forward control, a duty command value is output that is smaller than an upper limit of a duty command value under the feedback control.
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