公开(公告)号：WO2018112670A1

公开(公告)日：2018-06-28

申请号：PCT/CA2017/051604

申请日：2017-12-22

Applicant: WESTPORT POWER INC.

Inventor： GARNER, Gage D. ,  COLEMAN, Timothy S. ,  SINGH, Ashish ,  ELDER, Brendan J. ,  HARTNETT, Gavin G. ,  MCDONALD, Robbi L. ,  SAUVE, David ,  SCOTT, Cameron G. D.

IPC: F25J3/00 ,  B01D35/02

Abstract: An improved filter apparatus for a cryogenic fluid includes a filter and a support. The filter includes a mesh having an internal space and an open end. The support is associated with the mesh for maintaining a volume of the internal space above a predetermined value. In operation cryogenic fluid enters the internal space through the mesh and exits the open end thereof.

公开(公告)号：WO2016131147A1

公开(公告)日：2016-08-25

申请号：PCT/CA2016/050159

申请日：2016-02-19

Applicant: WESTPORT POWER INC.

Inventor： HARTNETT, Gavin G. ,  ELDER, Brendan Jason

IPC: F17C13/00 ,  F02M21/02 ,  F02M21/06 ,  F04B37/10

CPC classification number: F04B37/08 ,  F01P9/02 ,  F02D19/022 ,  F02D19/027 ,  F02M21/0212 ,  F02M21/0287 ,  F02M21/06 ,  F02M31/183 ,  F04B13/00 ,  F04B49/065 ,  F04B49/20 ,  Y02T10/32

Abstract: 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.

Abstract translation: 当在热交换器中用作工作流体的发动机冷却剂的温度太低而不能提高气体燃料温度时，热交换器下游的气态燃料对于燃料系统部件来说可能太冷，并且发动机冷却剂可能会冻结。 一种操作低温泵的方法，所述低温泵用于控制热交换器的排出温度，所述热交换器的排出温度使来自工作流体的热量从所述低温泵接收的过程流体蒸发，其中所述低温泵包括可在邻近气缸盖和 远端气缸盖，包括监测过程流体温度和工作流体温度中的至少一个; 在进气冲程期间从近似气缸盖缩回到远端气缸盖; 并且以多个增量排放冲程延伸活塞，直到活塞从远侧气缸盖返回到邻近气缸盖。 选择增量排放行程数量，增量排放行程的长度和增量排放冲程之间的休息期间中的至少一个，使得过程流体温度和工作流体温度中的至少一个保持在预定水平以上。