SUB-IDLE DOWNSHIFT CONTROL OF A TRANSMISSION
    1.
    发明申请
    SUB-IDLE DOWNSHIFT CONTROL OF A TRANSMISSION 有权
    传输的子空间控制

    公开(公告)号:US20160031445A1

    公开(公告)日:2016-02-04

    申请号:US14449220

    申请日:2014-08-01

    Inventor: Jason Jousma

    Abstract: A method is provided for use in a vehicle. The vehicle includes a transmission, a turbocharger, a transmission control module (TCM), an engine, and an engine control module (ECM). The engine includes a crankshaft that rotates at an engine speed and the turbocharger includes a turbine that rotates at a turbine speed. The method includes requesting a downshift of the transmission from an off-going gear ratio to an on-coming gear ratio. The turbine is rotating at an off-going turbine speed at the off-going gear ratio and the turbine is configured to rotate at an on-coming turbine speed at the on-coming gear ratio, greater than the off-going gear speed. A determination is made that the requested downshift is a powerdown low-throttle shift. An engine speed request value is then transmitted from the TCM to the ECM. The transmitted engine speed request value is at least equal to the on-coming gear speed.

    Abstract translation: 提供一种用于车辆的方法。 车辆包括变速器,涡轮增压器,变速器控制模块(TCM),发动机和发动机控制模块(ECM)。 发动机包括以发动机转速旋转的曲轴,涡轮增压器包括以涡轮转速旋转的涡轮机。 该方法包括请求将变速器从越野变速比降档到接通变速比。 涡轮机以离轴变速比的不断变化的涡轮机转速旋转,并且涡轮被构造成以接通的传动比在即将到来的涡轮机转速下旋转,大于远离齿轮速度。 确定所请求的降档是低功率低油位换档。 然后,发动机速度请求值从TCM发送到ECM。 发送的发动机速度请求值至少等于接通的速度。

    Sub-idle downshift control of a transmission

    公开(公告)号:US09771075B2

    公开(公告)日:2017-09-26

    申请号:US14449220

    申请日:2014-08-01

    Inventor: Jason Jousma

    Abstract: A method is provided for use in a vehicle. The vehicle includes a transmission, a turbocharger, a transmission control module (TCM), an engine, and an engine control module (ECM). The engine includes a crankshaft that rotates at an engine speed and the turbocharger includes a turbine that rotates at a turbine speed. The method includes requesting a downshift of the transmission from an off-going gear ratio to an on-coming gear ratio. The turbine is rotating at an off-going turbine speed at the off-going gear ratio and the turbine is configured to rotate at an on-coming turbine speed at the on-coming gear ratio, greater than the off-going gear speed. A determination is made that the requested downshift is a powerdown low-throttle shift. An engine speed request value is then transmitted from the TCM to the ECM. The transmitted engine speed request value is at least equal to the on-coming gear speed.

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