CA2483413A1 - Gaseous fuel injector having high heat tolerance - Google Patents
Gaseous fuel injector having high heat tolerance Download PDFInfo
- Publication number
- CA2483413A1 CA2483413A1 CA002483413A CA2483413A CA2483413A1 CA 2483413 A1 CA2483413 A1 CA 2483413A1 CA 002483413 A CA002483413 A CA 002483413A CA 2483413 A CA2483413 A CA 2483413A CA 2483413 A1 CA2483413 A1 CA 2483413A1
- Authority
- CA
- Canada
- Prior art keywords
- valve
- gaseous fuel
- fuel injector
- oil
- cartridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title abstract 8
- 239000007789 gas Substances 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 2
- 239000012190 activator Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000003345 natural gas Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
Classifications
-
- Y02T10/32—
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
A high pressure gaseous fuel injector for injecting natural gas or other gaseous fuels at high pressures (eg. 300 to 700 psig more or less) into combustion engines for improved efficiency, better performance and reduced environmental emissions.
The fuel injector is powered by hydraulic signals from an electrohydraulic valve.
The fuel injector includes an outer cartridge housing and a universal valve cartridge mounted therein. The cartridge comprises an activator body and a valve body secured together, and the valve body has a gas valve slidable therein. The stroke of the valve is adjustable by controlling the size of shims in the valve body assembly, thereby providing a universal valve cartridge that can be easily adapted to differing fueling requirements for models and sizes of engines. The valve body includes a spring chamber between upper and lower valve guides. The valve body also includes cross-holes to allow cool gaseous fuel to successively pulsate into and out of the spring chamber and thereby cool the exposed portion of the valve between guides, preventing heating of the dynamic gas seal located in the upper guide. An unsealed small clearance between the actuating piston and its bore in the actuator body allows controlled leakage of oil. The leakage of oil lubricates metal to metal contact between the upper guide and the valve and lubricates the dynamic gas seat. Gaseous fuel leakage into the leaked oil is tolerated and any combined oil/gaseous fuel is removed to an external location for separation. Spring washers are used to urge the valve assembly insert against a metal O-ring supported by the outer cartridge body.
The fuel injector is powered by hydraulic signals from an electrohydraulic valve.
The fuel injector includes an outer cartridge housing and a universal valve cartridge mounted therein. The cartridge comprises an activator body and a valve body secured together, and the valve body has a gas valve slidable therein. The stroke of the valve is adjustable by controlling the size of shims in the valve body assembly, thereby providing a universal valve cartridge that can be easily adapted to differing fueling requirements for models and sizes of engines. The valve body includes a spring chamber between upper and lower valve guides. The valve body also includes cross-holes to allow cool gaseous fuel to successively pulsate into and out of the spring chamber and thereby cool the exposed portion of the valve between guides, preventing heating of the dynamic gas seal located in the upper guide. An unsealed small clearance between the actuating piston and its bore in the actuator body allows controlled leakage of oil. The leakage of oil lubricates metal to metal contact between the upper guide and the valve and lubricates the dynamic gas seat. Gaseous fuel leakage into the leaked oil is tolerated and any combined oil/gaseous fuel is removed to an external location for separation. Spring washers are used to urge the valve assembly insert against a metal O-ring supported by the outer cartridge body.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/481,150 US6360963B2 (en) | 2000-01-12 | 2000-01-12 | Gaseous fuel injector having high heat tolerance |
| US09/481,150 | 2000-01-12 | ||
| CA002330724A CA2330724C (en) | 2000-01-12 | 2001-01-10 | Gaseous fuel injector having high heat tolerance |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002330724A Division CA2330724C (en) | 2000-01-12 | 2001-01-10 | Gaseous fuel injector having high heat tolerance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2483413A1 true CA2483413A1 (en) | 2001-07-12 |
| CA2483413C CA2483413C (en) | 2005-08-30 |
Family
ID=33565680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002483413A Expired - Lifetime CA2483413C (en) | 2000-01-12 | 2001-01-10 | Gaseous fuel injector having high heat tolerance |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2483413C (en) |
-
2001
- 2001-01-10 CA CA002483413A patent/CA2483413C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2483413C (en) | 2005-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2330226A1 (en) | Hydraulically-actuated fuel injector and cartridge | |
| CA2330724A1 (en) | Gaseous fuel injector having high heat tolerance | |
| ES529100A0 (en) | FUEL INJECTION DEVICE FOR COMBUSTION ENGINES WITH AIR COMPRESSION AND SELF-IGNITION | |
| CA2474327A1 (en) | Seal assembly for a pressurized fuel feed system for an internal combustion engine | |
| JPH04504157A (en) | Variable compression ratio internal combustion engine | |
| US6260776B1 (en) | Universal gaseous fuel injector cartridge | |
| AU6256000A (en) | High pressure solenoid pilot valve | |
| FI963502A (en) | Fuel valve and high pressure gas engine equipped with such a valve | |
| EP2949916A1 (en) | Fuel injector | |
| JP3564149B2 (en) | Device for hydraulically operating an exhaust valve of a reciprocating internal combustion engine | |
| US4384553A (en) | Two stage compression ignition fuel ignitor | |
| JP6849892B2 (en) | Piston pump device | |
| CA2483413A1 (en) | Gaseous fuel injector having high heat tolerance | |
| KR102033173B1 (en) | A fuel valve for injecting gaseous fuel into a combustion chamber of a large two-stroke turbocharged compression-ignition internal combustion engine and method | |
| JP3900390B2 (en) | Fuel supply device | |
| JP2002322969A (en) | Fuel injection device | |
| JP6932278B1 (en) | Fuel pump with improved encapsulation characteristics | |
| CN113719360A (en) | Supply pressure adjusting device | |
| GB2374900B (en) | Valve spring mechanism | |
| JP2021105401A (en) | Uniflow scavenging two-cycle engine | |
| CN114135698B (en) | High-pressure gas fuel safety cut-off valve for ship engine | |
| CN212155988U (en) | Electromagnetic regulating valve | |
| KR20020054334A (en) | Actuating fluid delivery system for a fuel injector | |
| ES2158411T3 (en) | PNEUMATIC CLOSURE SPRING FOR A GAS SELECTOR VALVE OF AN INTERNAL COMBUSTION ENGINE. | |
| US3266472A (en) | Variable compression ratio internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |