EP0230735A2
Expired / Lapsed
EP
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Driving power control system
Assignee: Toyota Motor Corp
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Filing: 1986-12-04
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Granted: —
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Expires: 2006-12-04
Abstract
Abstract A driving power control system for a vehicle which minimizes the shock due to a gear change by keeping a driving force constant throughout the shifting, resulting in high drivability. The system includes a mechanism for controlling the engine power to keep driving force unchanged, mechanisms for respectively keeping the acceleration and driving force constant throughout the shifting, and a second throttle valve for controlling the engine power.
Inventors
- 👤 Hidetoshi Shimizu
- 👤 Shigeru Terada
- 👤 Yasuhiko Mishio
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 05:48
CPC Classifications
B; B60; B60W; B60W10/00; B60W10/04; B60W10/06; B60W10/10; B60W10/11; B60W30/00; B60W30/18; B60W30/1819; F; F16; F16H; F16H61/00; F16H61/04; F16H61/0437; B60W2510/00; B60W2510/10; B60W2510/105; F16H59/00; F16H59/14; F16H2059/148; F16H59/74; F16H2059/743; F16H59/48; F16H63/00; F16H63/40; F16H63/50; F16H63/502
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
79 words
A driving power control system for a vehicle having an automatic transmission which connects to an engine, receives an engine power output from said engine and transmits a driving power via a ranged gear thereof to a driving wheel, comprising: means for controlling said engine power to such an amount as to minimize a difference of a first driving power before a shift change of said transmission and a second driving power after said shift change of said transmission.
Claim 2
Dependent Claim
79 words
A driving power control system for a vehicle having an automatic transmission which connects to an engine, receives an engine power output from said engine and transmits a driving power via a ranged gear thereof to a driving wheel, comprising: means for controlling said engine power to such an amount as to minimize a difference of a first driving power before a shift change of said transmission and a second driving power after said shift change of said transmission.
Claim 3
Dependent Claim
111 words
The driving power control system for the vehicle according to claim 1 wherein said means includes: means for computing said first driving power in response to a first gear position before said shift change, means for computing said second driving power after said shift change in response to a second gear position after said shift change when said shift change is required, and for computing a desired engine power to such an amount as to minimize a difference between said first driving power and said second driving power, means for altering said engine power toward said desired engine power and for changing said first gear position for said second gear position.
Claim 4
Dependent Claim
121 words
The driving power control system for the vehicle according to claim 1 wherein said means includes: means for computing said first driving power in response to an engine load and a first gear position before said shift change, means for computing said second driving power after said shift change in response to said engine load and a second gear position after said shift change when said shift change is required, and for computing a desired engine power to such an amount as to minimize a difference between said first' " driving power and said second driving power, means for altering said engine power toward said desired engine power and for changing from said first gear position to said second gear position.
Claim 5
Dependent Claim
26 words
The driving power control system for the vehicle according to claim 2, wherein said engine power is computed in accordance with a ratio of gear position.
Claim 6
Dependent Claim
38 words
The driving power control system for the vehicle according to claim 1 wherein said means includes a second throttle valve provided in an air passage having a first throttle valve connected to an accelerator, controls said engine power.
Claim 7
Dependent Claim
133 words
The driving power control system for the vehicle according to claim 5 wherein said means includes: means for computing said first driving power in response to an engine load and a first gear position before said shift change, means for computing said second driving power after said shift change in response to said engine load and a second gear position after said shift change when said shift change is required, and for computing a desired engine power to such an amount as to minimize a difference between said first driving power and said second driving power and for computing a desired throttle position corresponding to said desired engine power, means for altering a throttle position toward said desired throttle position and for changing from said first gear position to said second gear position.
Claim 8
Dependent Claim
135 words
A driving power control system for a vehicle having an automatic transmission which connects to an engine, receives an engine power output from said engine and transmits a driving power via a ranged gear thereof to a driving wheel, comprising: means for computing a first vehicle acceleration in response to a first gear position before said shift change, means for computing a second vehicle acceleration after said shift change in response to a second gear position after said shift change when said shift change is required, and for computing a desired engine power to such an amount as to minimize a difference between said first vehicle acceleration and said second vehicle acceleration, means for altering said engine power toward said desired engine power and for changing said first gear position for said second gear position.
Claim 9
Dependent Claim
135 words
A driving power control system for a vehicle having an automatic transmission which connects to an engine, receives an engine power output from said engine and transmits a driving power via a ranged gear thereof to a driving wheel, comprising: means for computing a first vehicle acceleration in response to a first gear position before said shift change, means for computing a second vehicle acceleration after said shift change in response to a second gear position after said shift change when said shift change is required, and for computing a desired engine power to such an amount as to minimize a difference between said first vehicle acceleration and said second vehicle acceleration, means for altering said engine power toward said desired engine power and for changing said first gear position for said second gear position.
Claim 10
Dependent Claim
26 words
The driving power control system for the vehicle according to claim 3, wherein said engine load is a function of a specific volume of intake air.
Claim 11
Dependent Claim
23 words
The driving power control system for the vehicle according to claim 3, wherein said engine load is a function of a throttle valve.
Claim 12
Independent Claim
107 words
A method of controlling the driving power of an engine of a vehicle having an automatic transmission during transient shifting conditions thereof, comprising: computing a first driving power or vehicle acceleration in accordance with a first gear position before a transmission shift change, computing a second driving power in accordance with a second gear position when a shift change is required, computing a desired optimum engine power determined to minimize a difference between said first and second driving powers, or said first and second vehicle accelerations, and adjusting the engine power towards said desired engine power and changing said first gear position to said second gear position.
Claim 13
Independent Claim
107 words
A method of controlling the driving power of an engine of a vehicle having an automatic transmission during transient shifting conditions thereof, comprising: computing a first driving power or vehicle acceleration in accordance with a first gear position before a transmission shift change, computing a second driving power in accordance with a second gear position when a shift change is required, computing a desired optimum engine power determined to minimize a difference between said first and second driving powers, or said first and second vehicle accelerations, and adjusting the engine power towards said desired engine power and changing said first gear position to said second gear position.
References Cited (Backward Citations)
JPS58174749A
Cited
JPS5999046A
Cited
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