US4831985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throttle control system
Assignee: Whitnash PLC
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Filing: 1988-02-17
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Granted: 1989-05-23
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Expires: 2008-02-17
Abstract
Abstract A throttle control system for a vehicle of the type including a throttle body and a throttle valve mounted within the throttle body and controlling the delivery of fuel and/or air to the engine of the vehicle. The invention control sytsem includes a rotary potentiometer providing an output signal representing the instantaneous position of the accelerator pedal of the vehicle; another rotary potentiometer providing an output signal representing the instantaneous angular position of the throttle valve; a comparator receiving the throttle pedal and throttle valve position signals and generating an error signal representing the difference between the two signals; a differential signal representing the rate of change in the error signal; a summer receiving the output signal from the throttle valve potentiometer, the error signal from the comparator, and the differential signal from the differential and generating a summed output signal; and a proportional rotary solenoid which receives the summed output signal from the summer and positions the pivot shaft of the throttle valve in proportion to the received signal.
Inventors
- 👤 Brian D. Mabee
- 👤 Keith V. Leigh-Monstevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:41
CPC Classifications
F; F02; F02D; F02D11/00; F02D11/06; F02D11/10; F02D2011/101; F02D2011/102
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
112 words
A throttle control system for a motor vehicle of the type including an engine, a throttle body including a throttle valve, and an operator controlled accelerator member, said system including: (A) throttle valve position sensing means operative to generate a first electrical signal representing the position of the throttle valve; (B) accelerator position sensing means to generate a second electrical signal representing the position of the accelerator member; (C) control means operative to generate a control signal reflecting the rate of change of the difference between said first and second signals; and (D) actuator means receiving said control signal and operative to position the throttle valve in proportion to said control signal.
Claim 2
Dependent Claim
112 words
A throttle control system for a motor vehicle of the type including an engine, a throttle body including a throttle valve, and an operator controlled accelerator member, said system including: (A) throttle valve position sensing means operative to generate a first electrical signal representing the position of the throttle valve; (B) accelerator position sensing means to generate a second electrical signal representing the position of the accelerator member; (C) control means operative to generate a control signal reflecting the rate of change of the difference between said first and second signals; and (D) actuator means receiving said control signal and operative to position the throttle valve in proportion to said control signal.
Claim 3
Dependent Claim
150 words
A throttle control system for a motor vehicle of the type including an engine, a throttle body including a throttle valve, means biasing the throttle valve toward an idle position, and an operator controlled accelerator member, said system comprising: (A) throttle valve position sensing means operative to generate a first electrical signal representing the position of the throttle valve; (B) accelerator position sensing means operative to generate a second electrical signal representing the position of the accelerator member; (C) control means operative to generate a control signal including a first component representing said first electrical signal, a second component representing the difference between said first and second electrical signals and a third component representing the rate of change of the difference between said first and second desired signals; and (D) a proportional solenoid receiving said control signal and operative to position the throttle valve in proportion to said control signal.
Claim 4
Dependent Claim
150 words
A throttle control system for a motor vehicle of the type including an engine, a throttle body including a throttle valve, means biasing the throttle valve toward an idle position, and an operator controlled accelerator member, said system comprising: (A) throttle valve position sensing means operative to generate a first electrical signal representing the position of the throttle valve; (B) accelerator position sensing means operative to generate a second electrical signal representing the position of the accelerator member; (C) control means operative to generate a control signal including a first component representing said first electrical signal, a second component representing the difference between said first and second electrical signals and a third component representing the rate of change of the difference between said first and second desired signals; and (D) a proportional solenoid receiving said control signal and operative to position the throttle valve in proportion to said control signal.
Claim 5
Dependent Claim
134 words
A throttle control system for a motor vehicle of the type including an engine and a throttle body mounted on the engine, and an operator controlled accelerator member, said system including: (A) a throttle valve mounted for pivotal movement in the throttle body and having a pivot shaft; (B) a rotary potentiometer drivingly connected to one end of said shaft and operative to generate a first electrical signal representing the position of said throttle valve; (C) a rotary proportional solenoid drivingly connected to the other end of said shaft; (D) accelerator position sensing means operative to generate a second electrical signal representing the position of the accelerator member; and (E) control means operative to generate a control signal reflecting the difference between said first and second signals for delivery to said rotary proportional solenoid.
Claim 6
Dependent Claim
134 words
A throttle control system for a motor vehicle of the type including an engine and a throttle body mounted on the engine, and an operator controlled accelerator member, said system including: (A) a throttle valve mounted for pivotal movement in the throttle body and having a pivot shaft; (B) a rotary potentiometer drivingly connected to one end of said shaft and operative to generate a first electrical signal representing the position of said throttle valve; (C) a rotary proportional solenoid drivingly connected to the other end of said shaft; (D) accelerator position sensing means operative to generate a second electrical signal representing the position of the accelerator member; and (E) control means operative to generate a control signal reflecting the difference between said first and second signals for delivery to said rotary proportional solenoid.
Claim 7
Dependent Claim
149 words
A throttle control system for a motor vehicle of the type including an engine, a throttle body including a throttle valve, means biasing the throttle valve toward an idle position, and an operator controlled accelerator member, said stem including: (A) throttle valve position sensing means operative to generate a first electrical signal representing the position of the throttle valve; (B) accelerator position sensing means operative to generate a second electrical signal representing the position of the accelerator member; (C) control means operative to generate a control signal including a first component representing said first electrical signal, a second component representing the difference between said first and second electrical signals, and a third component representing the rate of change of the difference between said first and second electrical signals; and (D) actuator means receiving said control signal and operative to position the throttle valve in proportion to said control signal.
Claim 8
Dependent Claim
149 words
A throttle control system for a motor vehicle of the type including an engine, a throttle body including a throttle valve, means biasing the throttle valve toward an idle position, and an operator controlled accelerator member, said stem including: (A) throttle valve position sensing means operative to generate a first electrical signal representing the position of the throttle valve; (B) accelerator position sensing means operative to generate a second electrical signal representing the position of the accelerator member; (C) control means operative to generate a control signal including a first component representing said first electrical signal, a second component representing the difference between said first and second electrical signals, and a third component representing the rate of change of the difference between said first and second electrical signals; and (D) actuator means receiving said control signal and operative to position the throttle valve in proportion to said control signal.
Claim 9
Dependent Claim
43 words
A control system according to claim 1 wherein: (E) said control signal includes a first component representing the rate of change of the difference between said first and second signals and a second component representing the difference between said first and second signals.
Claim 10
Dependent Claim
21 words
A control system according to claim 5 wherein: (F) said control signal includes a third component representing said first electrical signal.
Claim 11
Dependent Claim
16 words
The control system according to claim 4 wherein: (E) said actuator means comprises a proportional solenoid.
Claim 12
Dependent Claim
26 words
A control system according to claim 7 wherein: (F) said throttle valve position sensing means and said accelerator position sensing means each comprise a rotary potentiometer.
Claim 13
Dependent Claim
84 words
A control system according to claim 4 wherein: (E) said control means includes a comparator receiving said first and second electrical signals and generating an error signal representing the difference between said first and second signals and a differential signal representing the rate of change of said error signal; (F) said control means further includes a summer; and (G) said summer receives said first signal, said error signal, and said differential signal and generates a control signal including said first, second and third components.
Claim 14
Dependent Claim
92 words
A control system according to claim 2 wherein (E) said control means includes a comparator receiving said first and second electrical signals and generating an error signal representing the difference between said first and second signals and a differential receiving said error signal and generating a differential signal representing the rate of change of said error signal; (F) said control means further includes a summer; and (G) said summer receives said first signal, said error signal, and said differential signal and generates a control signal having said first, second, and third components.
Claim 15
Dependent Claim
59 words
A control system according to claim 10 wherein: (F) said control means further includes a summer; and (G) said summer receives said first signal, said error signal, and said differential signal and generates a control signal having a first component representing said first signal, a second component representing said error signal, and a third component representing said differential signal.
Claim 16
Dependent Claim
35 words
A control system according to claim 2 wherein: (E) said throttle valve position sensing means and said accelerator position sensing means each comprise a rotary potentiometer; and (F) said actuator comprises a rotary proportional solenoid.
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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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |