Low Emission Combustion influences Durability of Fuel Injection Pipe Line and Treatment of the Pipe

Tadakazu Shiozaki; Takayuki Suzuki; Takashi Suzuki; Takeshi Matsumoto; Keizo Sugao

doi:10.4271/871614

1987-09-01

Low Emission Combustion influences Durability of Fuel Injection Pipe Line and Treatment of the Pipe 871614

In order to reduce particulate and NOx emission from the direct injection diesel engine, most researchers have been expecting the utilization of higher injection pressure and injection rate for improvement of diesel combustion. In the case of pump-line-nozzle system, the injection pipe line is very important with regard to the high injection pressure. Namely, the pipe line must be able to resist not only high pressure but also cavitation erosion.

In this paper, the effect of high injection pressure, injection rate and sharp cutting at the end of fuel injection are discussed along with cavitation phenomena on the injection pipe line. And durability tests on the pipe line system under high injection pressure using a test rig are also described.

Regarding durability tests, several measures have been taken for the injection pipe. As a result, the authors have found that the best solution for the injection pipe is a composite pipe made with SUS and steel.

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Low Emission Combustion influences Durability of Fuel Injection Pipe Line and Treatment of the Pipe 871614

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