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专利名称：Method of controlling a continuously
variable transmission automatically or as adriver-controlled manual steppedtransmission
发明人：Joseph Petersmann,Willi Seidel,Heinz
Stehle,Werner Mollers,Uwe Froschke
申请号：US08/832183申请日：19970408公开号：US06086506A公开日：20000711
摘要：The invention relates to a method for controlling a continuously variabletransmission with an electrohydraulic control, a selector device, and a controllableengaging clutch of a motor vehicle, especially one powered by an internal combustionengine, with a control device in a first operating mode automatically selecting andadjusting a gear ratio for the transmission from signals of the selector device and theoperating parameters of the motor vehicle such as the throttle angle, driving speed andengine rpm, by means of curves selectable by the driver.
It is proposed, in a second operating mode, to simulate a multi-step transmissioninfluenceable directly by the driver. In order to permit use of this operating mode, only afew preset gear ratios are made available to the driver. In addition, from the operatingparameters of the vehicle, but at least from a throttle signal value, as described in DE-OS39 22 051, a parameter called driving activity SK(t) is obtained which evaluates the drivingstyle of the driver or his behavior as a function of traffic situations relative to the control
of the motor vehicle.
The preset gear ratios are combined in groups. Depending on the driving activity SK(t)which has been determined, a group is selected. With higher driving activity SK(t), groupsare selected in which the gear ratios are spread more widely and the number of gearratios is greater. For less driving activity, SK(t) groups are selected whose spread is lessand in which the number of gear ratios is smaller.
申请人：DR. ING. H.C.F. PORSCHE AG
代理机构：Evenson, McKeown, Edwards & Lenahan, PL
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