US4483142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Output control system for Stirling engines
Assignee: Aisin Corp
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Filing: 1984-02-15
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Granted: 1984-11-20
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Expires: 2004-02-15
Abstract
Abstract An output control system for a Stirling engine includes a pressure reducing valve disposed in a highest-cycle-pressure line and connected between at least one working space and a compressor and a booster valve disposed in a lowest-cycle-pressure line and connected between the working space and the compressor. The pressure reducing valve and the booster valve are selectively actuatable by an accelerator lever attached to a feedback piston cylinder connected to the lowest-cycle-pressure line. The output control system also includes a two-way unidirectional solenoid-operated valve disposed in the highest-cycle-pressure line upstream of the pressure reducing valve and a three-way bidirectional solenoid-operated valve disposed in the lowest-cycle-pressure line downstream of the booster valve. The solenoid-operated valves are controlled by a control unit to close the highest-cycle-pressure line and connect the lowest-cycle-pressure line through a regulator valve to a source of high pressure gas when the engine is at rest.
Inventors
- 👤 Masura Tsunekawa
- 👤 Yoshihiro Naito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:11
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/045; F02G1/05; F02G1/06; F02G2243/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
238 words
A system for controlling the output from a Stirling engine, comprising; (a) at least one engine working space; (b) a compressor; (c) a highest-cycle-pressure line connecting said working space through a first check valve to said compressor and having a pressure reducing valve, said first check valve allowing a working gas to flow from said working space to said compressor; (d) a lowest-cycle-pressure line connecting said working space through a second check valve to said compressor and having a booster valve, said first check valve allowing the working gas to flow from said compressor to said working space; (e) a high-pressure tank connected to said booster valve and said compressor; (f) a feedback piston cylinder connected to said lowest-cycle-pressure line and having a piston rod; (g) an accelerator lever having an end supported on said piston rod for selectively actuating said pressure reducing valve and said booster valve; (h) a two-way unidirectional solenoid-operated valve disposed in said highest-cycle-pressure line upstream of said pressure reducing valve; (i) a three-way bidirectional solenoid-operated valve disposed in said lowest-cycle-pressure line downstream of said booster valve; (j) a regulator valve connected between said three-way bidirectional solenoid-operated valve and a downstream port of said booster valve and said high-pressure tank; and (k) a control unit for controlling said solenoid-operated valves to close said highest-cycle-pressure line and connect said high-pressure tank through said regulator valve to said working space while the engine is being stopped.
Claim 2
Independent Claim
238 words
A system for controlling the output from a Stirling engine, comprising; (a) at least one engine working space; (b) a compressor; (c) a highest-cycle-pressure line connecting said working space through a first check valve to said compressor and having a pressure reducing valve, said first check valve allowing a working gas to flow from said working space to said compressor; (d) a lowest-cycle-pressure line connecting said working space through a second check valve to said compressor and having a booster valve, said first check valve allowing the working gas to flow from said compressor to said working space; (e) a high-pressure tank connected to said booster valve and said compressor; (f) a feedback piston cylinder connected to said lowest-cycle-pressure line and having a piston rod; (g) an accelerator lever having an end supported on said piston rod for selectively actuating said pressure reducing valve and said booster valve; (h) a two-way unidirectional solenoid-operated valve disposed in said highest-cycle-pressure line upstream of said pressure reducing valve; (i) a three-way bidirectional solenoid-operated valve disposed in said lowest-cycle-pressure line downstream of said booster valve; (j) a regulator valve connected between said three-way bidirectional solenoid-operated valve and a downstream port of said booster valve and said high-pressure tank; and (k) a control unit for controlling said solenoid-operated valves to close said highest-cycle-pressure line and connect said high-pressure tank through said regulator valve to said working space while the engine is being stopped.
Claim 3
Dependent Claim
38 words
An output control system according to claim 1, wherein said three-way bidirectional solenoid-operated valve has first and second ports leading to said working space and said booster valve, respectively, and a third port leading to said regulator valve.
Claim 4
Dependent Claim
61 words
An output control system according to claim 2, wherein said regulator valve comprises an atmospheric-pressure chamber, a line-pressure chamber connected to said third port, a piston disposed between said atmospheric-pressure chamber and said line-pressure chamber, a valve body connected to said piston, and a high-pressure chamber communicating with said high-pressure tank and connectable to said line-pressure chamber through said valve body.
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) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |