Hydraulic pressure control system for hydraulically operated vehicle
transmission
    51.
    发明授权
    Hydraulic pressure control system for hydraulically operated vehicle transmission 失效
    液压操纵车辆传动液压控制系统

    公开(公告)号:US5666863A

    公开(公告)日:1997-09-16

    申请号:US575382

    申请日:1995-12-20

    Abstract: A hydraulic pressure system for a frictional engaging element such as clutches for a vehicle automatic transmission. The engagement state of the clutches is detected from the clutch slip rate, and the desired change rate of the rotational speed of the transmission input shaft (the main shaft rotational speed) during the gearshift operation period is varied based thereon. The hydraulic pressures supplied to the clutches are controlled for bringing the actual rotational speed change rate to the desired value. Since the clutch engagement state can therefore be controlled based on the desired value, irrespective of the temperature of the oil (ATF) and aging of the clutches, it is at all times possible to secure optimum gearshift characteristics and to avoid the occurrence of gearshift shock.

    Abstract translation: 一种用于摩擦接合元件的液压系统,例如用于车辆自动变速器的离合器。 根据离合器滑移率检测离合器的接合状态,换档换档运转期间变速器输入轴的转速的期望变化率(主轴转速)根据变化。 控制提供给离合器的液压,使实际转速变化率达到期望值。 因此,由于离合器接合状态能够根据期望值进行控制,与油温(ATF)和离合器老化无关,因此在任何时候都可以确保最佳的换档特性并避免换档冲击的发生 。

    Motor vehicle transmission with a system for the detection of the shift
position selected in the motor vehicle transmission
    52.
    发明授权
    Motor vehicle transmission with a system for the detection of the shift position selected in the motor vehicle transmission 失效
    机动车辆变速器具有用于检测在机动车辆变速箱中选择的换档位置的系统

    公开(公告)号:US5660079A

    公开(公告)日:1997-08-26

    申请号:US510108

    申请日:1995-08-01

    Inventor: Erich Friedrich

    Abstract: To detect the shift position of a motor vehicle transmission (1), the invention teaches that by means of sensors (17), the position of a shift lever (7) which shifts the transmission (1) is measured in the neutral path of a shift pattern of the transmission which corresponds to the neutral position of the transmission (1). The direction of the displacement into the gears which are located in pairs in the shift paths of the transmission is measured by means of shift lever contacts (23), which respond when the shift lever (7) is displaced from the neutral shift position. An evaluation circuit (25), as a function of the signals from the sensors (17) which, in the neutral shift position of the transmission, detect the shift path which has been selected and the signals from the shift lever contacts (23) which detect the direction of displacement, delivers a shift position signal which identifies the shift position instantaneously engaged. The speed ratio of the input shaft (3) and the output shaft (5) of the transmission (1) determined by means of speed sensors (33, 35) is compared in the evaluation circuit (25) to the transmission ratio specified by the design of the transmission for the shift position selected. When the speed ratios coincide, the gear is assumed to be engaged. Since in the transmission (1), only the shift position of the shift lever (7) in the neutral shift position is monitored, the sensors or switches (17) used for this purpose can have large actuation range tolerances.

    Abstract translation: 为了检测机动车辆变速器(1)的换档位置,本发明教导了通过传感器(17),在变速箱(1)的中立路径中测量换档杆(7)的位置, 对应于变速器(1)的中立位置的变速器的换档模式。 通过变速杆接触件(23)测量位于传动装置的换档路径中成对设置的齿轮中的位移方向,当变速杆(7)从中立档位移动时响应。 评估电路(25)作为来自传感器(17)的信号的函数,传感器在传动装置的空档位置检测已经选择的换档路径和来自变速杆接触件(23)的信号, 检测位移方向,传送一个移动位置信号,该信号识别瞬时接合的换档位置。 通过速度传感器(33,35)确定的变速器(1)的输入轴(3)和输出轴(5)的速比在评估电路(25)中被比较为由 选择变速档位的变速器设计。 当速度比重合时,假设齿轮接合。 由于在变速器(1)中,仅监控变速杆(7)在空挡位置的换档位置,因此用于此目的的传感器或开关(17)可以具有大的动作范围公差。

    Procedure for controlling a motor vehicle drive unit
    56.
    发明授权
    Procedure for controlling a motor vehicle drive unit 失效
    控制机动车驱动单元的步骤

    公开(公告)号:US5576961A

    公开(公告)日:1996-11-19

    申请号:US354825

    申请日:1994-12-08

    Abstract: A procedure to control the drive unit in motor vehicles wherein: the maximum engine performance characteristic is determined; as a minimum engine performance characteristic, a reference performance characteristic is specified by how drive resistance depends on vehicle speed at a medium payload of the motor vehicle; above the reference performance characteristic, a first performance characteristic which is dependent on actual driving speed is defined and allocated a minimum assessment value; between this first performance characteristic and the maximum engine performance characteristic, a second performance characteristic which is also dependent on actual driving speed is defined and allocated a maximum assessment value; the current engine performance is determined; current assessment values are determined by comparing current engine performance to the first performance characteristic and the second performance characteristic; the current assessment values, as continuously determined, are filtered over time in this way, filtered assessment values are obtained; and these filtered assessment values are used to select drive unit control parameters, or parameter sets, which then are used to control the drive unit.

    Abstract translation: 一种控制机动车辆中的驱动单元的步骤,其中确定最大的发动机性能特性; 作为最低发动机性能特性,通过如何驱动阻力取决于机动车辆的中等有效载荷下的车辆速度来指定参考性能特性; 在参考性能特征之上,定义并分配与实际驾驶速度相关的第一性能特征,并分配最小评估值; 在该第一性能特性和最大发动机性能特性之间,定义并分配与实际驾驶速度相关的第二性能特征,并分配最大评估值; 当前的发动机性能确定; 当前评估值通过将当前发动机性能与第一性能特性和第二性能特性进行比较来确定; 如此连续确定的当前评估值以这种方式随时间过滤,获得过滤的评估值; 并且这些过滤的评估值用于选择驱动单元控制参数或参数组,然后用于控制驱动单元。

    Electronic control unit for a motor vehicle
    57.
    发明授权
    Electronic control unit for a motor vehicle 失效
    汽车电子控制单元

    公开(公告)号:US5563784A

    公开(公告)日:1996-10-08

    申请号:US342081

    申请日:1994-11-18

    Applicant: Bjoern Miener

    Inventor: Bjoern Miener

    Abstract: A motor vehicle has a driving engine, a clutch, an engine rpm transducer, a transmission, at least one driven wheel, and at least one speed transducer, in particular for ascertaining a vehicle speed or a power take off rpm of the transmission. The at least one speed transducer is equipped with a transducer wheel having one of a first and a second given number of teeth. An electronic control unit includes a clutch recognition device supplying a clutch signal when the clutch is engaged. A calculation circuit ascertains a ratio between the engine rpm and the vehicle speed. A comparator compares the ratio with a predetermined threshold value and supplies an output signal associated with the transducer wheel having the second given number of teeth if the ratio is less than the threshold value. A memory provides nonvolatile storage of the output signal if the clutch signal and the output signal are simultaneously present. The vehicle speed is ascertained from the number of teeth of the transducer wheel associated with the output signal stored in nonvolatile memory, or the number of teeth associated with a specified signal associated with a transducer wheel having the first given number of teeth, if the output signal stored in nonvolatile memory is not present.

    Abstract translation: 机动车辆具有驱动发动机,离合器,发动机转速传感器,变速器,至少一个从动轮和至少一个速度换能器,特别是用于确定变速器的车速或动力输出转速。 所述至少一个速度传感器配备有具有第一和第二给定齿数中的一个的换能器轮。 电子控制单元包括当离合器接合时提供离合器信号的离合器识别装置。 计算电路确定发动机转速和车速之间的比率。 比较器将比率与预定阈值进行比较,并且如果该比率小于阈值,则提供与具有第二给定齿数的换能器轮相关联的输出信号。 如果离合器信号和输出信号同时存在,则存储器提供输出信号的非易失性存储。 根据与存储在非易失性存储器中的输出信号相关联的换能器轮的齿数或与具有第一给定齿数的换能器轮相关联的指定信号相关联的齿数确定车速,如果输出 存储在非易失性存储器中的信号不存在。

    Automatic transmission control apparatus
    59.
    发明授权
    Automatic transmission control apparatus 失效
    自动变速器控制装置

    公开(公告)号:US5542887A

    公开(公告)日:1996-08-06

    申请号:US428968

    申请日:1995-04-25

    Abstract: An automatic transmission control system providing a neutral control state in which there is no slipping engagement of a first clutch which is engaged upon selection of a forward range and, as a result, the vehicle is not subjected to idling vibration. The fuel consumption reducing effect of the neutral control state is maintained and there is no heating and consequent deterioration of the friction material of the clutch. The control system includes a hydraulic servo for operation of the clutch, an input side speed sensor for detecting the input side speed of a fluid power coupling device connecting the transmission to the output of an engine, an output side speed sensor for detecting the output side speed of the fluid power coupling device, and a controller. The controller includes differential speed calculator, differential speed change detector, a pressure increasing device for increasing the hydraulic pressure of the hydraulic servo by a set pressure when the differential speed has not changed, and a pressure reducing device for reducing the hydraulic pressure of the hydraulic servo by a set pressure when the differential speed has changed.

    Abstract translation: 一种自动变速器控制系统,其提供空档控制状态,其中在选择前进档位时接合的第一离合器没有滑动接合,结果,车辆不受到空转振动。 保持中性控制状态的燃料消耗降低效果,并且不会导致离合器的摩擦材料的加热和随之而来的劣化。 控制系统包括用于操作离合器的液压伺服机构,用于检测将变速器与发动机的输出连接的流体动力联接装置的输入侧速度的输入侧速度传感器,检测输出侧的输出侧速度传感器 流体动力耦合装置的速度和控制器。 控制器包括差速器计算器,差速变速检测器,用于当差速没有变化时将设定压力提高液压伺服机构的液压的增压装置,以及用于降低液压油压的减压装置 当差速变化时,通过设定压力伺服。

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