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The Study on the Partial Shut-Down Injection Pump System and Its Effects on the Reduction of the Diesel White Smoke Emission
Technical Paper
852229
Sector:
Language:
English
Abstract
This paper describes the study on the reduction of white smoke
from a six-cylinders, 10.4 liter diesel engine with MAN's
M-type combustion system. During cold weather, diesel engines are
vulnerable to white smoke problem due to incomplete combustion,
especially, immediately after the start or under light load-low
speed operation.
In order to alleviate this problem, we have applied the partial
fuel shut-down scheme at idle or under light load-low speed run,
through the use of modified plungers in the injection pump. The
test results showed that the white smoke, total hydrocarbon,
aldehyde gas emission were reduced and BSFC was improved with the
adoption of the new plunger. Discussion was made on the
experimental result and stability of diesel engine at transition
point from partial cylinder operation to full cylinder
operation