US5025685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlling device for non-stage transmission for vehicles
Assignee: Honda Motor Co Ltd
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Filing: 1989-07-31
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Granted: 1991-06-25
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Expires: 2009-07-31
Abstract
Abstract A controlling device for controlling the transmission ratio of a non-stage transmission in a vehicle. The transmission ratio is controlled according to a forecast output power of the vehicle. The output power is forecast based on an operating condition of the vehicle, such as atmospheric pressure. The control considers various operating parameters. A comparison of a predetermined ratio of increase of engine speed or throttle opening with actual ratios of increase of engine speed or throttle opening may be made in controlling the transmission ratio. An uneven road surface is detected and a transmission ratio of the transmission is controlled accordingly to substantially eliminate hunting. An engine speed is controlled so that the engine speed may not exceed a predetermined rotational speed when the transmission gear ratio is fixed. A target engine speed or target transmission ratio is corrected in response to an output signal of a comparison device which compares an actual vehicle velocity with a set vehicle velocity during automatic fixed vehicle velocity running.
Inventors
- 👤 Akio Kobayashi
- 👤 Hiroshi Tanaka
- 👤 Shoji Yamashita
- 👤 Yasumasa Fujita
- 👤 Koichi Hikichi
- 👤 Chiaki Kumagai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:50
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/66; B; B60; B60W; B60W10/00; B60W10/04; B60W10/06; B60W10/10; B60W10/101; B60W30/00; B60W30/18; B60W30/1819; F16H61/38; F16H61/40; F16H61/46; F16H61/462; F16H59/00; F16H59/14; F16H59/18; F16H59/60; F16H59/62; F16H59/66; F16H59/68; F16H59/70; F16H61/42; F16H61/421; Y; Y10; Y10S; Y10S477/00; Y10S477/901
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
178 words
A controlling device for controlling the transmission ratio of a non-stage transmission in a vehicle, comprising, engine output power forecasting means for forecasting an output power of an engine in said vehicle, transmission ratio adjustment storage means for storing a transmission ratio adjustment value and outputting a transmission ratio adjustment according to said output power forecast, vehicle condition sensing means for determining an actual running condition of said vehicle, transmission gear ratio storage means for outputting an initial transmission ratio target value in response to said actual running condition, adding means for determining a transmission ratio target value based on said initial transmission ratio target value and said transmission ratio adjustment, and ratio control means for controlling said transmission ratio to correspond with said transmission ratio target value, wherein said engine output power forecasting means comprises comparison means for comparing a detected atmospheric pressure with a predetermined atmospheric pressure, and wherein said engine output power forecasting means provides said transmission ratio adjustment to said adding means when said detected atmospheric pressure is less than said predetermined atmospheric pressure.
Claim 2
Dependent Claim
178 words
A controlling device for controlling the transmission ratio of a non-stage transmission in a vehicle, comprising, engine output power forecasting means for forecasting an output power of an engine in said vehicle, transmission ratio adjustment storage means for storing a transmission ratio adjustment value and outputting a transmission ratio adjustment according to said output power forecast, vehicle condition sensing means for determining an actual running condition of said vehicle, transmission gear ratio storage means for outputting an initial transmission ratio target value in response to said actual running condition, adding means for determining a transmission ratio target value based on said initial transmission ratio target value and said transmission ratio adjustment, and ratio control means for controlling said transmission ratio to correspond with said transmission ratio target value, wherein said engine output power forecasting means comprises comparison means for comparing a detected atmospheric pressure with a predetermined atmospheric pressure, and wherein said engine output power forecasting means provides said transmission ratio adjustment to said adding means when said detected atmospheric pressure is less than said predetermined atmospheric pressure.
Claim 3
Dependent Claim
41 words
A controlling device for a non-stage transmission for a vehicle according to claim 1, wherein said engine output power forecasting means further comprises an output power decrease forecasting means for forecasting a condition wherein the output power of said engine decreases.
Claim 4
Dependent Claim
28 words
A controlling device for a non-stage transmission for a vehicle according to claim 2, wherein said output power decrease forecasting means further comprises an atmospheric pressure detecting means.
Claim 5
Dependent Claim
32 words
A controlling device for a non-stage transmission for a vehicle according to claim 1, further comprising an increasing fuel use detecting means for detecting an increasing amount of fuel use for acceleration.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |