EP0111891A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of controlling continuously variable transmission
Assignee: Nissan Motor Co Ltd
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Filing: 1983-12-14
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Granted: —
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Expires: 2003-12-14
Abstract
Abstract The method features in that the speed at which a shift actuator operates in effecting an upshifting is slower than the speed at which the shift actuator operates in effecting a downshifting.
Inventors
- 👤 Yoshikazu Tanaka
- 👤 Haruyoshi Kumura
- 👤 Keiju Abo
- 👤 Hiroyuki Hirano
- 👤 Sigeaki Yamamuro
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 23:26
CPC Classifications
B; B60; B60W; B60W30/00; B60W30/18; B60W10/00; B60W10/04; B60W10/10; B60W10/101; B60W30/1819; F; F16; F16H; F16H61/00; F16H61/66; F16H61/662; F16H61/66254; F16H61/66259
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
95 words
A method of controlling a continuously variable transmission, wherein a reduction ratio in the continuously variable transmission is variable in response to operation of a shift actuator, the method comprising the steps of: operating the shift actuator in a first direction at a first predetermined speed in effecting a shifting toward a small reduction ratio; and operating the shift actuator in a second direction which is opposite'to the first direction at a second predetermined speed in effecting a shifting toward a large reduction ratio, said first predetermined speed being slower than said second predetermined speed.
Claim 2
Independent Claim
95 words
A method of controlling a continuously variable transmission, wherein a reduction ratio in the continuously variable transmission is variable in response to operation of a shift actuator, the method comprising the steps of: operating the shift actuator in a first direction at a first predetermined speed in effecting a shifting toward a small reduction ratio; and operating the shift actuator in a second direction which is opposite'to the first direction at a second predetermined speed in effecting a shifting toward a large reduction ratio, said first predetermined speed being slower than said second predetermined speed.
Claim 3
Independent Claim
150 words
A method of controlling a continuously variable transmission comprising a shift actuator which is rotatable in a first direction in effecting a shifting toward a small reduction ratio and in a second direction which is opposite to the first direction in effecting a shifting toward a large reduction ratio, the method comprising the steps of: determining whether a reduction ratio -should change toward a small reduction ratio or tqward a large reduction ratio; operating the shift actuator in the first direction at a first predetermined speed in effecting a shifting toward the small reduction ratio when the reduction ratio should change toward the small reduction ratio; operating the shift actuator in the second direction at a second predetermined speed in effecting a shifting toward the large reduction ratio when the reduction ratio should change toward the large reduction ratio, said first predetermined speed being slower than the second predetermined speed.
Claim 4
Independent Claim
150 words
A method of controlling a continuously variable transmission comprising a shift actuator which is rotatable in a first direction in effecting a shifting toward a small reduction ratio and in a second direction which is opposite to the first direction in effecting a shifting toward a large reduction ratio, the method comprising the steps of: determining whether a reduction ratio -should change toward a small reduction ratio or tqward a large reduction ratio; operating the shift actuator in the first direction at a first predetermined speed in effecting a shifting toward the small reduction ratio when the reduction ratio should change toward the small reduction ratio; operating the shift actuator in the second direction at a second predetermined speed in effecting a shifting toward the large reduction ratio when the reduction ratio should change toward the large reduction ratio, said first predetermined speed being slower than the second predetermined speed.
Claim 5
Dependent Claim
45 words
A method as claimed in claim 2, wherein said determining step includes a step of comparing a signal indicative of an actual operating position assumed by the shift actuator with a signal indicative of a desired operating position to be assumed by the shift actuator.
Claim 6
Dependent Claim
34 words
A method as claimed in claim 2, wherein said determining step includes a step of comparing a signal indicative of an actual engine revolution speed,with a signal indicative of a desired engine revolution speed.
Claim 7
Dependent Claim
33 words
A method as claimed in claim 2, wherein said determining step includes a step of comparing a signal indicative of an actual reduction ratio with a signal indicative of a desired reduction ratio.
References Cited (Backward Citations)
No citation records indexed.
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