Fuel supply system for gaseous fuel operated vehicle and regulator therefor
A regulator for a gaseous fuel operated vehicle engine is described, comprising: a high pressure housing defining therein a high pressure gas passage and a valve chamber, the passage having one end thereof connectible to a high pressure conduit for introducing high pressure gaseous fuel thereinto and the other end thereof opening to the valve chamber; a low pressure housing fixedly mounted to the high pressure housing, the low pressure housing defining therein a decompression chamber; valve means mounted in the valve chamber for selectively opening and closing the other end of the high pressure gas passage in response to the gas pressure in the decompression chamber; means for moving the valve means in response to the gas pressure in the decompression chamber, the moving means including a diaphragm disposed parallel with the flow of gaseous fuel through the decompression chamber; fuel cutoff valve means mounted in the high pressure gas passage for cutting off the supply of high pressure fuel gas when the engine is at rest or at a time of emergency; and PTC heater means located around the valve means and adjacent to the fuel cutoff valve means for heating both, the PTC heater means having an electric resistance with a positive temperature coefficient.
- Assignee:
- Aisan Kogyo Kabushiki Kaisha, Toyota
- Patent Number(s):
- US 4811720
- OSTI ID:
- 6058303
- Resource Relation:
- Patent File Date: Filed date 12 Dec 1986
- Country of Publication:
- United States
- Language:
- English
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