Patent US4172576A successfully refreshed from Google Patents.
US3692007A
Expired / Lapsed
US
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Method and apparatus for decoupling engine accessories
Assignee: Motorola Solutions Inc
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Filing: 1970-12-30
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Granted: 1972-09-19
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Expires: 1990-12-30
Abstract
Abstract There is provided means for sequentially decoupling accessory loads from an engine in such a manner that, particularly when the engine is of optimum torque or power design, the decoupling action will not cause a sudden increase in engine torque output to be applied to the driving wheels of an automobile. Decoupling of the various engine accessories can be accomplished one at a time over a given limited range of throttle or torque demand settings or can be a gradual decoupling beginning at some predetermined throttle or torque demand setting and continuing to a condition of complete decoupling.
Inventors
- 👤 Ole K Nilssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:28
CPC Classifications
F; F02; F02B; F02B67/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
A method of decoupling a plurality of individual engine accessory means from an engine which is to operate over a wide range of engine speeds under various torque conditions, comprising the steps of, setting of a torque demand means to select the desired engine speed and torque conditions, said speed and torque conditions being uniformly variable over a range beginning from its initial condition and continuing until the engine produces maximum deliverable torque, step-by-step decoupling of a plurality of said individual accessory means each at a different time sequence beginning at said initial condition and continuing such step-by-step decoupling action until all engine accessories that are to be decoupled are in fact decoupled and the engine produces maximum deliverable torque.
Claim 2
Independent Claim
120 words
A method of decoupling a plurality of individual engine accessory means from an engine which is to operate over a wide range of engine speeds under various torque conditions, comprising the steps of, setting of a torque demand means to select the desired engine speed and torque conditions, said speed and torque conditions being uniformly variable over a range beginning from its initial condition and continuing until the engine produces maximum deliverable torque, step-by-step decoupling of a plurality of said individual accessory means each at a different time sequence beginning at said initial condition and continuing such step-by-step decoupling action until all engine accessories that are to be decoupled are in fact decoupled and the engine produces maximum deliverable torque.
Claim 3
Independent Claim
127 words
An apparatus for decoupling engine accessory means comprising in combination an engine for delivering power over a range of speed and torque conditions beginning with an initial condition and uniformly variable to an intermediate condition, a torque demand means selectively to increase engine power uniformly through the entire range of speed and torque conditions, a switching mechanism connected to said torque demand means for switchably disconnecting respective different ones of the accessory means in a predetermined sequence beginning at said intermediate condition and continuing to a maximum speed and torque condition, and decoupling means responsive to said switching mechanism for gradually decoupling engine accessory means until all such accessory means that are to be decoupled are in fact decoupled thus allowing the engine to produce maximum torque.
Claim 4
Independent Claim
127 words
An apparatus for decoupling engine accessory means comprising in combination an engine for delivering power over a range of speed and torque conditions beginning with an initial condition and uniformly variable to an intermediate condition, a torque demand means selectively to increase engine power uniformly through the entire range of speed and torque conditions, a switching mechanism connected to said torque demand means for switchably disconnecting respective different ones of the accessory means in a predetermined sequence beginning at said intermediate condition and continuing to a maximum speed and torque condition, and decoupling means responsive to said switching mechanism for gradually decoupling engine accessory means until all such accessory means that are to be decoupled are in fact decoupled thus allowing the engine to produce maximum torque.
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |