| 摘要 |
The invention relates to a fuel injection system for a diesel engine (1) which is cooled by a cooling water circuit (2). The inventive system comprises a storage tank (3), a distribution system (4), an injection harness (5) and a draining circuit (6). Said distribution system (4) comprises a pump (7) and a device (9) for the selective heating of the fresh fuel flow (8) before admission into the pump (7). The aforementioned injection harness (5) injects part of said fuel into the engine (1). The draining circuit (6), which comprises a device (11) for cooling the flow of non-injected fuel (10), is used for the selective return of said flow (10) towards the storage tank (3). According to the invention, the selective heating device (9) comprises a recycle line (22) and a direction setting element (21) which can be used selectively to recycle the flow of non-injected fuel (10) upstream of the pump (7).
|
