Control apparatus and method for engine-continuously variable transmission

• US 4,515,040 A
• Filed: 08/26/1982
• Issued: 05/07/1985
• Est. Priority Date: 08/27/1981
• Status: Expired due to Term

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Suzuki, Tadashi, Morimoto, Yoshiro, Takeuchi, Yasuhisa
• Primary Examiner(s): Krizmanich, George H.
• Assistant Examiner(s): Wright, Dirk
• Application Number:
  US06/411,987
• Time in Patent Office: 985 Days
• Field of Search: 74/857, 74/859, 74/860, 74/863, 74/864, 74/866
• US Class Current: 477/43
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/101 Infinitely variable gearings
• CPC Class Codes: B60W 10/107 with endless flexible members
• CPC Class Codes: B60W 30/1819 Propulsion control with control means using analogue circuits, relays or mechanical links
• CPC Class Codes: B60W 30/188 Controlling power parameters of the driveline, e.g. determining the required power
• CPC Class Codes: F16H 61/66259 using electrical or electronical sensing or control means

Abstract

A function generator circuit is provided which generates a target engine revolution speed electric signal indicative of a target engine revolution speed which is a first predetermined function of an accelerator pedal stroke electric signal indicative of a depression degree of an accelerator pedal. There is also provided another function generator circuit which generates a target engine torque electric signal indicative of a target engine torque which is a second predetermined function of the accelerator pedal stroke electric signal. A comparator compares the actual and target engine revolution speed electric signals and generates a deviation signal indicative of a difference between these signals. A shift control varies a reduction ratio in the continuously variable transmission to vary the revolution speed of the engine in a direction to reduce the deviation signal. A fuel supply device is controlled in response to the target engine torque electric signal so as to supply a fuel enough for production of the target engine torque.

Claims