| 摘要 |
PCT No. PCT/GB91/01077 Sec. 371 Date Dec. 24, 1992 Sec. 102(e) Date Dec. 24, 1992 PCT Filed Jul. 3, 1991 PCT Pub. No. WO92/01150 PCT Pub. Date Jan. 23, 1992.A fuel flow arrangement has a fuel feed line (14) for feeding fuel from a tank (10) to an engine (12) with a fuel injection pump (20) by means of a pump (18), and a fuel return line (16) for returning excess fuel from the engine to the tank. A bypass passage (21) with an orifice (22) provides a communication between the feed and return lines and a flow restriction (24) is provided in the return line. When the fuel pressure created by the pump (18) is low, at low temperatures, fuel entering the return line will be recycled through the orifice (22) to the engine to increase the temperature of the fuel feed to the engine, and at higher temperatures, the flow through the orifice (22) will be reversed.
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