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    • 52. 发明授权
    • System for controlling the free-wheeling release operation of a motor
vehicle clutch
    • 用于控制机动车离合器的续轮释放操作的系统
    • US4842113A
    • 1989-06-27
    • US464997
    • 1983-02-08
    • Dieter Lutz
    • Dieter Lutz
    • B60W10/06B60W10/10F16D48/06
    • B60W10/06B60W10/02B60W10/11B60W2030/1809B60W2540/12B60W2710/023B60W2710/065Y10T477/639Y10T477/6392
    • A clutch (3) which can be engaged and released by a controllable clutch drive (11) is arranged in the torque transmission path between an engine (1) and a gear transmission (5) of a motor vehicle. By means of a control switch (15) the clutch (3) is released whereby the vehicle can coast free-wheeling, saving fuel, with the engine (1) working in idling rate. On actuation of a brake pedal (15) a control circuit (13) engages the clutch (3) and at the same time shuts off the fuel supply to the engine (1) by means of a fuel valve (23). The engine (1) thus brakes the vehicle without additional fuel consumption. Alternatively the control circuit (13) can have constantly shut off the fuel supply of the engine (1) in free-wheeling operation. Under control of a pressure detector (45) detecting the suction in a servo-brake unit (41) the control circuit (13) engages the clutch (3) when the pressure rises to values which no longer guarantee operation of the brake unit. The engine (1), normally stationary in free-wheeling operation, is rotated with the fuel supply shut off and generates the suction necessary for the working of the brake unit (41). Before the clutch (3) is engaged the control circuit (13) switches on a starter motor (47) which makes the drive-output rotation rate of the engine (1) equal to the rotation rate at the input shaft (25) of the gear transmission (5).
    • 在发动机(1)和机动车辆的变速器(5)之间的转矩传递路径中布置有可由可控离合器驱动器(11)接合和释放的离合器(3)。 通过控制开关(15),离合器(3)被释放,由此,发动机(1)以空转的速度工作,车辆可以随意转动,节省燃料。 在致动制动踏板(15)时,控制回路(13)与离合器(3)接合,同时通过燃料阀(23)将燃料供给发动机(1)。 因此,发动机(1)在没有额外的燃料消耗的情况下制动车辆。 或者,控制电路(13)可以在续流操作中不断关闭发动机(1)的燃料供应。 在压力检测器(45)的控制下,当压力上升到不再保证制动单元的操作的值时,检测伺服制动单元(41)中的吸力,控制回路(13)接合离合器(3)。 通常在续流操作中静止的发动机(1)随着燃料供给切断而旋转,并产生用于制动单元(41)的加工所需的抽吸。 在离合器(3)接合之前,控制回路(13)接通启动马达(47),起动马达(47)使发动机(1)的驱动输出转速等于输入轴(25)的转速 齿轮传动(5)。