1986-10-01

Development of Low Particulate Engine with Ceramic Swirl Chamber 861407

An all-ceramic swirl chamber has been developed which meets the 1987 U.S. particulate emission standard for LDV.
The all ceramic construction raises combustion temperature to reduce particulate emission to the necessary level. But particulate reduction led to two-fold increase in NOx.
This problem was coped with by applying EGR and fuel injection timing control. As a result NOx has been cut to the same level as with a base engine and particulate has been further reduced.

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