US4601369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle electronic control method
Assignee: Isuzu Motors Ltd
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Filing: 1983-12-28
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Granted: 1986-07-22
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Expires: 2003-12-28
Abstract
Abstract A method of electronically controlling a vehicle according to which, when a transmission is shifted into the reverse gear position, a clutch is disengaged followed by switching the transmission to a neutral position. With the clutch in the disengaged state, the transmission is then temporarily switched to a gear position having a synchromesh mechanism, whereby a disk clutch pressing against a pressure plate or flywheel is separated from the same. After the clutch is completely disengaged, the transmission is switched to the reverse gear position.
Inventors
- 👤 Toshihiro Hattori
- 👤 Masaki Ishihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:37
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/04; F16H61/0403; B; B60; B60W; B60W10/00; B60W10/02; B60W10/10; B60W10/11; B60W30/00; B60W30/18; B60W30/1819; F16H61/02; F16H61/0202; F16H61/0204; F16H61/0246; B60W30/18009; B60W30/18036; F16H61/26; F16H61/28; F16H61/30; F16H2061/307; F16H63/00; F16H63/02; F16H63/30; F16H63/302; F16H63/3023; F16H63/40; F16H63/46; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/2003
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
194 words
A method of electronically controlling a vehicle having a clutch controlled by a clutch actuator, a transmission for changing gear ratios by a transmission actuator and having a synchromesh mechanism provided at gear positions other than a reverse gear position, and an electronic control unit for controlling both actuators in accordance with the vehicle running conditions, said method comprising steps of: (a) disengaging the clutch in response to a command delivered to the clutch actuator by the electronic control unit at the same time that the transmission starts to be switched to the reverse gear position; (b) switching the transmission to a neutral gear position in response to a command delivered to the transmission actuator by the electronic control unit after the clutch is disengaged; (c) switching the transmission to a gear position provided with the synchromesh mechanism in response to a command delivered to the transmission actuator by the electronic control unit with the clutch remaining in the disengaged state; and (d) switching the transmission to the reverse gear position in response to a command delivered to the transmission actuator by the electronic control unit with the clutch remaining in the disengaged state.
Claim 2
Independent Claim
194 words
A method of electronically controlling a vehicle having a clutch controlled by a clutch actuator, a transmission for changing gear ratios by a transmission actuator and having a synchromesh mechanism provided at gear positions other than a reverse gear position, and an electronic control unit for controlling both actuators in accordance with the vehicle running conditions, said method comprising steps of: (a) disengaging the clutch in response to a command delivered to the clutch actuator by the electronic control unit at the same time that the transmission starts to be switched to the reverse gear position; (b) switching the transmission to a neutral gear position in response to a command delivered to the transmission actuator by the electronic control unit after the clutch is disengaged; (c) switching the transmission to a gear position provided with the synchromesh mechanism in response to a command delivered to the transmission actuator by the electronic control unit with the clutch remaining in the disengaged state; and (d) switching the transmission to the reverse gear position in response to a command delivered to the transmission actuator by the electronic control unit with the clutch remaining in the disengaged state.
Claim 3
Dependent Claim
14 words
The method according to claim 1, wherein the transmission is a parallel-shaft gear transmission.
Claim 4
Dependent Claim
13 words
The method according to claim 1, wherein the clutch is a disk clutch.
Claim 5
Dependent Claim
38 words
The method according to claim 1, wherein step (c) comprises switching the transmission to a gear position provided with the synchromesh mechanism and facing the reverse gear position with the neutral gear position serving as the center therebetween.
References Cited (Backward Citations)
GB1179838A
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GB1225448A
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US3756358A
Cited
US4324322A
Cited
US4181036A
Cited
US4463622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |