Patent US4909209A successfully refreshed from Google Patents.
US4909209A
Expired / Lapsed
US
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Apparatus for injecting LP gas into diesel engine
Assignee: Nihon Kankyo Denso Co Ltd
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Filing: 1989-06-14
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Granted: 1990-03-20
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Expires: 2009-06-14
Abstract
Abstract An important for a diesel engine by injecting LP gas into the diesel engine. A solenoid valve and a pressure controller are provided in a line between an LP gas cylinder and a gas injector mounted on the air inlet of the diesel engine. The solenoid valve is activated only when the engine temperature has risen above a predetermined level and only after the vehicle speed has exceeded a predermined level. This arrangement increases the output of the diesel engine, saves the fuel cost and eliminates black smoke.
Inventors
- 👤 Yositeru Takahasi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:44
CPC Classifications
F; F02; F02D; F02D19/00; F02D19/06; F02D19/08; F02D19/0626; F02D19/0628; F02D19/0631; F02D19/0602; F02D19/0613; F02D19/0615; F02D19/10; F02D19/105; F02B; F02B3/00; F02B3/06; F02D19/0639; F02D19/0642; F02D19/0647; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
An apparatus for injecting LP gas into a diesel engine, comprising an injector nozzle mounted on the air inlet of the diesel engine and having an adjustable inner diameter, a cylinder containing LP gas, a solenoid valve and a pressure controller provided in a line between said cylinder and said LP gas injector, a thermostat for activating said solenoid valve only when the engine has heated up to a predetermined level, and a stop switch for activating said solenoid valve only when the vehicle speed has risen above a predetermined level.
Claim 2
Independent Claim
91 words
An apparatus for injecting LP gas into a diesel engine, comprising an injector nozzle mounted on the air inlet of the diesel engine and having an adjustable inner diameter, a cylinder containing LP gas, a solenoid valve and a pressure controller provided in a line between said cylinder and said LP gas injector, a thermostat for activating said solenoid valve only when the engine has heated up to a predetermined level, and a stop switch for activating said solenoid valve only when the vehicle speed has risen above a predetermined level.
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) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |