US4649880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for throttle valve control
Assignee: Nissan Motor Co Ltd
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Filing: 1986-03-24
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Granted: 1987-03-17
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Expires: 2006-03-24
Abstract
Abstract An apparatus for controlling movement of a throttle valve in response to a change in the position of an accelerator pedal. The apparatus includes a control circuit powered from a power source through an ignition switch for determining a value corresponding to a setting of the position of the throttle valve. A throttle actuator is connected to the control circuit for moving the throttle valve to the determined setting. A device is provided to retain the control circuit powered from the power source until the throttle actuator returns the throttle valve to its closed position after the ignition switch is turned off.
Inventors
- 👤 Hiroyuki Asano
- 👤 Shinji Katayose
- 👤 Hideaki Inoue
- 👤 Akira Takei
- 👤 Minoru Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:53
CPC Classifications
F; F02; F02D; F02D11/00; F02D11/06; F02D11/10; F02D41/00; F02D41/02; F02D41/04; F02D41/042; F02D2011/101; F02D2011/102
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
144 words
An apparatus for use with an internal combustion engine having an ignition switch, an accelerator device and a throttle valve for controlling movement of said throttle valve in response to a change in the position of said accelerator device, comprising: a signal source for generating an electrical signal indicative of the position of said accelerator device; a control circuit powered from a power source through the ignition switch for determining a value corresponding to a setting of the position of said throttle valve in response to said accelerator device position indicative signal; a throttle actuator connected to said control circuit for moving said throttle valve to said determined setting; and said control circuit including means for retaining said control circuit powered from said power source until said throttle actuator returns said throttle valve to its closed position after said ignition switch is turned off.
Claim 2
Independent Claim
144 words
An apparatus for use with an internal combustion engine having an ignition switch, an accelerator device and a throttle valve for controlling movement of said throttle valve in response to a change in the position of said accelerator device, comprising: a signal source for generating an electrical signal indicative of the position of said accelerator device; a control circuit powered from a power source through the ignition switch for determining a value corresponding to a setting of the position of said throttle valve in response to said accelerator device position indicative signal; a throttle actuator connected to said control circuit for moving said throttle valve to said determined setting; and said control circuit including means for retaining said control circuit powered from said power source until said throttle actuator returns said throttle valve to its closed position after said ignition switch is turned off.
Claim 3
Dependent Claim
32 words
The apparatus as claimed in claim 1, wherein said control circuit means retains said control circuit powered from said power source for a predetermined time after said ignition switch is turned off.
Claim 4
Dependent Claim
50 words
The apparatus as claimed in claim 2, wherein said control circuit means includes a circuit for connecting said control circuit to said power source when said ignition switch is on, said circuit disconnecting said control circuit from said power source a predetermined time after said ignition switch is turned off.
Claim 5
Dependent Claim
50 words
The apparatus as claimed in claim 1, wherein said control circuit means includes a second signal source for generating a signal when said throttle valve arrives at its closed position, and means responsive to the signal from said second signal source for disconnecting said control circuit from said power source.
Claim 6
Dependent Claim
28 words
The apparatus as claimed in claim 1, wherein said control circuit includes means for retaining said control circuit powered from said power source when said engine is running.
Claim 7
Dependent Claim
34 words
The apparatus as claimed in claim 1, wherein said control circuit includes means for zeroing said value corresponding to a setting of the position of said throttle valve when said ignition switch is off.
Claim 8
Dependent Claim
109 words
The apparatus as claimed in claim 1, wherein said control circuit means includes: a first switching circuit for connecting said control circuit to said power source when said ignition switch is on, said first switching circuit disonnecting said control circuit from said power source when said ignition switch is off; a second switching circuit for connecting said control circuit to said power source when said ignition switch is on, said second switching circuit disconnecting said control circuit from said power source in response to a control signal; and means for generating the control signal to said second switching circuit a predetermined time after said ignition switch is turned off.
Claim 9
Dependent Claim
28 words
The apparatus as claim in claim 7, wherein said control circuit includes means for retaining said control circuit powered from said power source when said engine is running.
Claim 10
Dependent Claim
34 words
The apparatus as claimed in claim 7, wherein said control circuit includes means for zeroing said value corresponding to a setting of the position of said throttle valve when said ignition switch is off.
Claim 11
Dependent Claim
108 words
The apparatus as claimed in claim 1, wherein said control circuit means includes: a first switching circuit for connecting said control circuit to said power source when said ignition switch is on, said first switching circuit disconnecting said control circuit from said power source when said ignition switch is off; a second switching circuit for connecting said control circuit to said power source when said ignition witch is on, said second switching circuit disconnecting said control circuit from said power source in response to a control signal; and means for generating the control signal to said second switching circuit when said throttle valve arrives at its closed position.
Claim 12
Dependent Claim
28 words
The apparatus as claimed in claim 10, wherein said control circuit includes means for retaining said control circuit powered from said power source when said engine is running.
Claim 13
Dependent Claim
34 words
The apparatus as claimed in claim 10, wherein said control circuit includes means for zeroing said value corresponding to a setting of the position of said throttle valve when said ignition switch is off.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |