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
    • 10. 发明授权
    • Method for rapid, stable torque transition between lean rich combustion modes
    • 稀富燃烧模式之间快速,稳定转矩转换的方法
    • US07239954B2
    • 2007-07-03
    • US11182679
    • 2005-07-15
    • Yiqun Huang
    • Yiqun Huang
    • B60T7/12G05D1/00G06F7/00G06F17/00
    • F02D41/0002F02D41/027F02D41/3035F02D41/307F02D41/40F02D2041/001Y02T10/42Y02T10/44
    • A method for rapidly transitioning from a lean combustion mode to a rich combustion mode, such as often required for the regeneration of aftertreatment devices, is provided by abrupt intake air reduction and a concurrent abrupt increase in fuel injection quantity with accompanying retardation of fuel injection timing. The abrupt increase in fuel quantity is to a maximum value sufficient to immediately provide a defined initial rich air/fuel ratio for a coexistent oxygen concentration in the cylinder. The fuel quantity is then proportionally reduced from the maximum value to a target fuel quantity to maintain a target air/fuel ratio during the transition. Simultaneously, injection timing is abruptly retarded to a value sufficient to avoid torque increase as a result of the increased injected fuel. The injection timing is subsequently proportionally advanced from the abruptly retarded timing value when the target fuel quantity and air/fuel ratio values are achieved.
    • 通过突然的进气减少和燃料喷射量的同时突然增加,伴随着燃料喷射正时的延迟,提供了从稀燃燃烧模式快速转变为浓燃烧模式的方法,例如通常需要再处理装置的方法 。 燃料量的突然增加是足以立即提供用于气缸中共存的氧气浓度的限定的初始浓空气/燃料比的最大值。 然后将燃料量从最大值成比例地减小到目标燃料量,以在转变期间维持目标空气/燃料比。 同时,喷射正时被突然延迟到足以避免由于喷射燃料的增加而引起的扭矩增加的值。 当达到目标燃料量和空气/燃料比值时,喷射正时随后从突然延迟的定时值成比例地提前。