Title:
GASEOUS AND LIQUID FUEL INJECTOR WITH A TWO-WAY HYDRAULIC FLUID CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO2001079685
Kind Code:
A3
Abstract:
A hydraulically actuated dual fuel injector (1) separately injects a gaseous fuel and a liquid fuel into a combustion chamber of an internal combustion engine. The injector comprises: (a) an injector body; (b) a hydraulic fluid inlet port (7) for a pressurized hydraulic fluid, said hydraulic fluid being of sufficient pressure to maintain sealing and to prevent leakage of the gaseous fuel into the hydraulic fluid; (c) a first liquid fuel inlet port (6) for a first liquid fuel; (d) a first injection valve (16) disposed within the injector body fluidly connected to the first fuel inlet port (6) for controlling injection of the first liquid fuel through a first fuel ejection port (5); (e) a second inlet port (23) for a second gaseous fuel; (f) a second injection valve (17) fluidly connected to the second inlet port (23) for controlling injection of the second gaseous fuel through a second fuel ejection port (4); (g) a first two-way control (3) valve which controls the flow of the hydraulic fluid to actuate the first injection valve (16); (h) a second control valve (2) which controls the flow of the hydraulic fluid to actuate the second injection valve (17); (i) a metering device (15) within the injector body for metering the amount of first liquid fuel injected by the first injection valve (16); and (j) a fluid seal cavity (22) in the injector body which prevents leakage of the second gaseous fuel.
Inventors:
TOUCHETTE ALAIN M J (CA)
DOUVILLE BRADLEY D (CA)
BAKER SIMON M (CA)
PETERS LESTER L (US)
PERR JULIUS (US)
GHUMAN AMARJIT S (US)
BENSON DONALD J (US)
DOUVILLE BRADLEY D (CA)
BAKER SIMON M (CA)
PETERS LESTER L (US)
PERR JULIUS (US)
GHUMAN AMARJIT S (US)
BENSON DONALD J (US)
Application Number:
PCT/CA2001/000545
Publication Date:
February 28, 2002
Filing Date:
April 18, 2001
Export Citation:
Assignee:
WESTPORT RES INC (CA)
TOUCHETTE ALAIN M J (CA)
DOUVILLE BRADLEY D (CA)
BAKER SIMON M (CA)
PETERS LESTER L (US)
PERR JULIUS (US)
GHUMAN AMARJIT S (US)
BENSON DONALD J (US)
TOUCHETTE ALAIN M J (CA)
DOUVILLE BRADLEY D (CA)
BAKER SIMON M (CA)
PETERS LESTER L (US)
PERR JULIUS (US)
GHUMAN AMARJIT S (US)
BENSON DONALD J (US)
International Classes:
F02M21/02; F02D19/02; F02D19/10; F02D41/20; F02D41/38; F02M25/00; F02M37/00; F02M43/02; F02M43/04; F02M45/08; F02M47/00; F02M47/02; F02M47/04; F02M57/02; F02M59/10; F02M61/04; F02M61/10; F02M61/16; (IPC1-7): F02M43/04; F02M21/02; F02M47/04; F02M47/02; F02M59/10; F02M57/02
Domestic Patent References:
| WO2000015956A1 | 2000-03-23 |
Foreign References:
| DE19531870A1 | 1997-03-06 | |||
| US3464627A | 1969-09-02 | |||
| EP0889230A2 | 1999-01-07 |
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