Patent EP0273735A2 successfully refreshed from Google Patents.
EP0273735A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electronic automatic gear transmission control apparatus
Assignee: Isuzu Motors Ltd
•
Filing: 1987-12-24
•
Granted: —
•
Expires: 2007-12-24
Abstract
Abstract An electronic gear transmission control apparatus commands an optimum gear position based on a shift schedule map according to a vehicle speed and an accelerator opening. When an upshift over two or more gear positions is commanded on the basis of the shift schedule map, a gear shift to the commanded gear position is restrained, and a gear shift to a gear position which is one gear position higher than the present gear position is effected for a prescribed period of time.
Inventors
- 👤 Toshifumi Koshizawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 09:38
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/10; B; B60; B60W; B60W30/00; B60W30/18; B60W30/18009; B60W30/18109; B60W30/18136; B60W10/00; B60W10/10; B60W10/11; B60W2510/00; B60W2510/06; B60W2510/0604; B60W2540/00; B60W2540/10; B60W2710/00; B60W2710/10; B60W2710/1005; F16H61/21
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
128 words
An electronic automatic gear transmission control apparatus having a shift schedule map for commanding an optimum gear position based on a vehicle speed signal and an accelerator opening signal, said electronic automatic gear transmission control apparatus comprising: first means for comparing a gear position commanded by said shift schedule map with a present gear position; and second means for restraining a gear shift to the commanded gear position and effecting a gear shift to a gear position which is one gear position higher than the present gear position for a prescribed period of time, if the commanded gear position requires an upshift to a gear position which is two or more gear positions higher than the present gear position as a result of comparison in said first means.
Claim 2
Dependent Claim
128 words
An electronic automatic gear transmission control apparatus having a shift schedule map for commanding an optimum gear position based on a vehicle speed signal and an accelerator opening signal, said electronic automatic gear transmission control apparatus comprising: first means for comparing a gear position commanded by said shift schedule map with a present gear position; and second means for restraining a gear shift to the commanded gear position and effecting a gear shift to a gear position which is one gear position higher than the present gear position for a prescribed period of time, if the commanded gear position requires an upshift to a gear position which is two or more gear positions higher than the present gear position as a result of comparison in said first means.
Claim 3
Dependent Claim
30 words
An electronic automatic gear transmission control apparatus according to claim 1, wherein said second means comprises means for determining said prescribed period of time dependent on the present gear position.
Claim 4
Dependent Claim
71 words
An electronic automatic gear transmission control apparatus according to claim 1, further including means for holding a gear position which is one gear position higher than the present gear position until an accelerator pedal is depressed again, when the detected amount of accelerator opening indicates an idling position while the gear shift up to the gear position which is one gear position higher than the present gear position is being effected.
Claim 5
Dependent Claim
46 words
An electronic automatic gear transmission control apparatus according to claim 1, further including means for effecting, with priority, a gear shift to an optimum gear position selected by a select lever when an upshift over two or more gear positions is selected by the select lever.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.