▎ 摘　　要

NOVELTY - This utility new type relates to one a diesel engine discharge door, comprising a valve pole, a valve neck and pressure sensor, the valve neck fixed in a lower end of the valve pole, the valve neck far away from one side the valve pole surface is set up with a groove, a pressure sensor b is a inner groove, lower part of the valve pole is sleeved an annular baffle plate, the upper valve pole set with a scraping carbon groove, the valve pole set with a lock slot, the upper end outside the pneuma door pole set with a radiating layer and the radiating layer by graphene. The existing relative technology, this utility new type quick heat dissipation, strong structure, valid for preventing carbon and prolong the use life.