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
    • 2. 发明授权
    • Control apparatus for direct injection spark ignition type internal
combustion engine
    • 直喷式火花点火式内燃机控制装置
    • US5979397A
    • 1999-11-09
    • US106762
    • 1998-06-30
    • Kenichi MachidaJunichi FuruyaHiraku OhbaYuki NakajimaTakamasa Ueda
    • Kenichi MachidaJunichi FuruyaHiraku OhbaYuki NakajimaTakamasa Ueda
    • F02B17/00F02B75/12F02D41/02F02D41/04F02D41/30F02D41/34F02D41/40
    • F02D41/402F02D41/3023F02B2075/125F02D2041/389Y02T10/123Y02T10/44
    • The present invention aims at preventing such a situation that anyone of the divided injection amounts becomes less than a minimum compensation amount for a fuel injection valve, in case of conducting a two-step injection (weakly stratified combustion) in which a part of fuel is injected during intake stroke and the remaining fuel is injected during compression stroke. To this end, at the time of instructing to conduct the two-step injection, a whole injection amount TI is divided into: an injection amount TIH for homogeneous combustion to be injected during intake stroke, and an injection amount TIS for stratified combustion to be injected during compression stroke, based on a division ratio corresponding to a target air-fuel ratio. Further, each of the injection amounts TIH and TIS after division is compared with a minimum compensation amount MIN for the fuel injection valve. Based on the result of the comparison, the injection amount, which has a smaller division ratio, is set to be zero, and the injection amount, which has a larger division ratio, is set to be the whole injection amount TI, when either one of the injection amounts TIH and TIS is judged to be less than the minimum compensation amount MIN. Alternatively, the injection amount, which has the smaller division ratio, is set to be the minimum compensation amount MIN, and the injection amount, which has the larger division ratio, is set to be the remainder obtained by subtracting the minimum compensation amount MIN from the whole injection amount TI.
    • 本发明的目的是防止在燃料的一部分进行两步喷射(弱分层燃烧)的情况下,分割喷射量的任何一方都变得小于燃料喷射阀的最小补偿量的情况 在进气冲程期间喷射并且在压缩冲程期间喷射剩余的燃料。 为此,在进行两步喷射的指示时,整个喷射量TI被分为:在进气冲程期间要喷射的均匀燃烧的喷射量TIH和用于分层燃烧的喷射量TIS 基于与目标空燃比对应的分配比,在压缩冲程期间喷射。 此外,将分配后的每个喷射量TIH和TIS与燃料喷射阀的最小补偿量MIN进行比较。 基于比较的结果,具有较小分配比的喷射量被设定为零,并且具有较大分割比的喷射量被设定为整个喷射量TI,当任一个 注射量TIH和TIS被判定为小于最小补偿量MIN。 或者,具有较小分割比的喷射量被设定为最小补偿量MIN,并且具有较大分割比的喷射量被设定为通过从最小补偿量MIN中减去最小补偿量MIN而获得的余数 整个注射量为TI。