会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明专利
    • Control device of the variable valve engine
    • JP3915367B2
    • 2007-05-16
    • JP2000083457
    • 2000-03-24
    • 日産自動車株式会社
    • 創 三浦
    • F02D13/02F02M25/07
    • Y02T10/121Y02T10/18
    • PROBLEM TO BE SOLVED: To realize a non-throttle operation and reduce emission by increasing an internal EGR rate within the range of an allowable limit of torque fluctuation. SOLUTION: According to engine operation conditions, target torque is calculated and a torque fluctuation amount of an engine is detected. On a torque line, in which intake valve closing timing IVC and a valve overlap (an O/L position, for instance) of an intake valve and an exhaust valve are made as parameters, the target torque is controlled to the combination of an intake valve closing timing IVO and the valve overlap (the O/L position), in which the internal EGR rate becomes the vicinity of a maximum within the range of the allowable limit of the torque fluctuation amount, according to the torque fluctuation amount detected actually. Namely, when the torque fluctuation amount is smaller than the allowable limit value, control is performed in an internal EGR rate increasing direction, and when the torque fluctuation amount is larger than the allowable limit value, the control is performed in an internal EGR rate decreasing direction.