US5540203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated hydraulic system for automotive vehicle
Assignee: Ford Global Technologies LLC
•
Filing: 1994-10-05
•
Granted: 1996-07-30
•
Expires: 2014-10-05
Abstract
Abstract An integrated hydraulic system for an automotive vehicle includes a hydraulic pump (16) coupled with and driven by an internal combustion engine (12) and internal and external hydraulic circuits for operating hydraulically powered engine accessories and hydraulically powered chassis components. An electronic controller (18)) sensing a variety of operating parameters controls the output of the hydraulic pump (16) so as to assure that adequate hydraulic fluid is provided to the various components and accessories.
Inventors
- 👤 David M. Foulkes
- 👤 Gordon Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:18
CPC Classifications
F; F02; F02D; F02D29/00; F02D29/04; B; B60; B60G; B60G17/00; B60G17/015; B60G17/0195; B60T; B60T8/00; B60T8/32; B60T8/321; B60T8/328; B60T8/3285; B60T8/34; B60T8/40; B60T8/4018; B60T8/4027; B62; B62D; B62D5/00; B62D5/06; B62D5/07
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
171 words
An integrated hydraulic system for an automotive vehicle having a chassis and engine power, comprising: an internal combustion engine; a hydraulic pump coupled with and driven by said engine with said pump having low and high pressure sections; an internal hydraulic circuit contained within said engine, with said internal circuit being operatively connected with both the low and high pressure sections of said pump, as well as with a plurality of hydraulically powered engine accessories, so as to selectively furnish hydraulic fluid under low and high pressure to said accessories; an external hydraulic circuit extending from both the low and high pressure sections of said hydraulic pump to a plurality of hydraulically powered chassis components, so as to selectively furnish hydraulic fluid under low and high pressure to said chassis components; and an electronic controller for operating said hydraulic pump so as to control the effective displacement of the pump in response to the pressure and volume requirements of the accessories and components connected to said internal and external hydraulic circuits.
Claim 2
Dependent Claim
171 words
An integrated hydraulic system for an automotive vehicle having a chassis and engine power, comprising: an internal combustion engine; a hydraulic pump coupled with and driven by said engine with said pump having low and high pressure sections; an internal hydraulic circuit contained within said engine, with said internal circuit being operatively connected with both the low and high pressure sections of said pump, as well as with a plurality of hydraulically powered engine accessories, so as to selectively furnish hydraulic fluid under low and high pressure to said accessories; an external hydraulic circuit extending from both the low and high pressure sections of said hydraulic pump to a plurality of hydraulically powered chassis components, so as to selectively furnish hydraulic fluid under low and high pressure to said chassis components; and an electronic controller for operating said hydraulic pump so as to control the effective displacement of the pump in response to the pressure and volume requirements of the accessories and components connected to said internal and external hydraulic circuits.
Claim 3
Dependent Claim
38 words
An integrated hydraulic system according to claim 1, wherein said pump comprises a piston pump having variable geometry, such that the effective stroke of at least one piston located within the pump is controlled by said electronic controller.
Claim 4
Dependent Claim
18 words
An integrated hydraulic system according to claim 1, wherein said pump comprises a turbine pump having variable geometry.
Claim 5
Dependent Claim
36 words
An integrated hydraulic system according to claim 1, wherein said internal hydraulic circuit furnishes hydraulic fluid under pressure from the high pressure section of said hydraulic pump to a fuel injection system associated with said engine.
Claim 6
Dependent Claim
78 words
An integrated hydraulic system according to claim 1, wherein said internal hydraulic circuit furnishes hydraulic fluid under pressure to a hydraulically powered fuel injection system, as well as to a hydraulically powered cylinder valve actuation system, with both of said fuel injection and cylinder valve systems being associated with said engine, and with both said fuel injection system and said cylinder valve actuation system being furnished with hydraulic fluid from the high pressure section of the hydraulic pump.
Claim 7
Dependent Claim
46 words
An integrated hydraulic system according to claim 1, wherein said internal hydraulic circuit furnishes hydraulic fluid under a plurality of pressures to said plurality of hydraulically powered engine accessories, with the pressure of the fluid being supplied being matched with the demand of each particular accessory.
Claim 8
Dependent Claim
29 words
An integrated hydraulic system according to claim 1, wherein said external hydraulic circuit furnishes hydraulic fluid under a plurality of pressures to said plurality of hydraulically powered chassis components.
Claim 9
Dependent Claim
28 words
An integrated hydraulic system according to claim 1, wherein said electronic controller receives input signals from said hydraulic pump and from a plurality of engine operating parameter sensors.
Claim 10
Dependent Claim
26 words
An integrated hydraulic system according to claim 1, wherein said electronic controller operates an engine lubrication pump powered by hydraulic fluid from said internal hydraulic circuit.
Claim 11
Dependent Claim
26 words
An integrated hydraulic system according to claim 1, wherein said electronic controller operates an engine coolant pump powered by hydraulic fluid from said internal hydraulic circuit.
References Cited (Backward Citations)
US2881706A
Cited
US2968914A
Cited
US4262580A
Cited
US4188925A
Cited
US4200067A
Cited
US4201272A
Cited
US4213511A
Cited
US4420934A
Cited
US4285200A
Cited
US4322949A
Cited
US4559777A
Cited
US4556078A
Cited
US4745747A
Cited
US5051067A
Cited
US4708095A
Cited
US4780059A
Cited
US4926800A
Cited
US4966066A
Cited
US4971525A
Cited
US5168703A
Cited
US5138985A
Cited
US5247914A
Cited
US5232242A
Cited
US5255641A
Cited
US5176115A
Cited
US5245970A
Cited
US5263443A
Cited
US5332053A
Cited
US5357912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-07-30 | 2000-01-29 | 2000-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-30 | 2004-01-29 | 2004-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-30 | 2008-01-29 | 2008-07-30 | $7700.00 | Window Closed / Lapsed |