发明名称 |
CRYOGENIC PUMP OPERATION FOR CONTROLLING HEAT EXCHANGER DISCHARGE TEMPERATURE |
摘要 |
Gaseous fuel downstream of a heat exchanger can be too cold for fuel system components when the temperature of engine coolant employed as a working fluid in the heat exchanger is too low to elevate gaseous fuel temperature, and it is possible for the engine coolant to freeze. A method of operating a cryogenic pump for controlling discharge temperature of a heat exchanger that vaporizes a process fluid received from the cryogenic pump with heat from a working fluid, where the cryogenic pump includes a piston reciprocatable in a cylinder between a proximate cylinder head and a distal cylinder head, includes monitoring at least one of process fluid temperature and working fluid temperature; retracting the piston during an intake stroke from the proximate cylinder head to the distal cylinder head; and extending the piston in a plurality of incremental discharge strokes until the piston travels from the distal cylinder head back to the proximate cylinder head. At least one of the number of incremental discharge strokes, a length of incremental discharge strokes and a rest period between incremental discharge strokes is selected such that at least one of the process fluid temperature and working fluid temperature is maintained above a predetermined level. |
申请公布号 |
WO2016131147(A1) |
申请公布日期 |
2016.08.25 |
申请号 |
WO2016CA50159 |
申请日期 |
2016.02.19 |
申请人 |
WESTPORT POWER INC. |
发明人 |
HARTNETT, Gavin G.;ELDER, Brendan Jason |
分类号 |
F17C13/00;F02M21/02;F02M21/06;F04B37/10 |
主分类号 |
F17C13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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