| 摘要 |
This invention relates to a heat exchanger (36) for use with an internal combustion engine. The invention provides a pre-heater (10) for pre-heating liquid fuel prior to carburetion or injection thereof in an engine. The pre-heater includes a heat exchanger defining therethrough a fuel flow passage (56), connectable in line with a fuel line of an engine, and a heating liquid flow passage (54), connectable in parallel with a line of the engine carrying a heating liquid. It includes also a temperature sensitive flow regulator (38) connected in line with the heating liquid flow passage downstream of the heat exchanger, for regulating the flow rate of heating liquid through the heat exchanger in response to the temperature thereof. The combined operation of the heat exchanger and the flow regulator ensures that fuel exits the heat exchanger at a temperature within a small deviation from a predetermined optimum temperature for combustion. |
