US5178041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for engines and automatic transmissions
Assignee: Toyota Motor Corp
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Filing: 1991-07-15
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Granted: 1993-01-12
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Expires: 2011-07-15
Abstract
Abstract A control system for controlling both a lean combustion engine equipped with a swirl control valve and an automatic transmission. The control system includes a shift detector for detecting that a shift is being executed in the automatic transmission and a valve control inhibitor for inhibiting the switching the ON/OFF state of the swirl control valve in the course of the shift in the automatic transmission. A shift inhibitor inhibits the shift for a constant time period in case the ON/OFF state of the swirl control valve is switched. A regulation level changer changes the regulation level of the oil pressure of the automatic transmission in accordance with the ON/OFF state of the swirl control valve.
Inventors
- 👤 Mitsuru Takada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:45
CPC Classifications
B; B60; B60W; B60W30/00; B60W30/18; B60W10/00; B60W10/04; B60W10/06; B60W10/10; B60W10/11; B60W30/1819; B60W30/188; B60W30/1882; F; F16; F16H; F16H61/00; F16H61/0021; F16H61/04; F16H61/0437; F16H61/16; B60W2510/00; B60W2510/06; B60W2510/0604; B60W2510/0614; B60W2510/0619; B60W2540/00; B60W2540/16; B60W2710/00; B60W2710/06; B60W2710/0666; F16H59/00; F16H59/36; F16H59/38; F16H2059/385; F16H2061/0075; F16H2061/0096; F16H59/14; F16H59/24; F16H59/44; F16H59/50; F16H59/54; F16H59/74; F16H61/06; F16H61/065; F16H61/067; F16H63/00; F16H63/40; F16H63/50; F16H63/502; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40; Y02T10/80; Y02T10/84
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
157 words
A control system for controlling both an engine having a plurality of cylinders, a plurality of intake ports for each of said cylinders, a plurality of intake valves for opening or closing said intake ports, and a control valve for opening or closing one of the intake ports of each of said cylinders; and an automatic transmission connected to said engine, said control system comprising: valve control means for opening said control valve when an engine load is high, and for closing said control valve when the engine load is low; air/fuel ratio control means for making an air/fuel ratio when said control valve is closed higher than that when said control valve is open; shift detect means for detecting that a shift is being executed in said automatic transmission; and valve control inhibit means for inhibiting the switching of the ON/OFF state of said control valve in the course of the shift in said automatic transmission.
Claim 2
Dependent Claim
157 words
A control system for controlling both an engine having a plurality of cylinders, a plurality of intake ports for each of said cylinders, a plurality of intake valves for opening or closing said intake ports, and a control valve for opening or closing one of the intake ports of each of said cylinders; and an automatic transmission connected to said engine, said control system comprising: valve control means for opening said control valve when an engine load is high, and for closing said control valve when the engine load is low; air/fuel ratio control means for making an air/fuel ratio when said control valve is closed higher than that when said control valve is open; shift detect means for detecting that a shift is being executed in said automatic transmission; and valve control inhibit means for inhibiting the switching of the ON/OFF state of said control valve in the course of the shift in said automatic transmission.
Claim 3
Dependent Claim
88 words
A control method of controlling both an engine having a plurality of cylinders, a plurality of intake ports for each of said cylinders, a plurality of intake valves for opening or closing said intake ports, and a control valve for opening or closing one of the intake ports of each of said cylinders; and an automatic transmission connected to said engine, said method comprising the step of: inhibiting the switching of the ON/OFF state of said control valve in the course of a shift in said automatic transmission.
Claim 4
Dependent Claim
88 words
A control method of controlling both an engine having a plurality of cylinders, a plurality of intake ports for each of said cylinders, a plurality of intake valves for opening or closing said intake ports, and a control valve for opening or closing one of the intake ports of each of said cylinders; and an automatic transmission connected to said engine, said method comprising the step of: inhibiting the switching of the ON/OFF state of said control valve in the course of a shift in said automatic transmission.
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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) | 1996-01-12 | 1996-07-13 | 1997-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-12 | 2000-07-13 | 2001-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-12 | 2004-07-13 | 2005-01-12 | $7700.00 | Window Closed / Lapsed |