EXHAUST MICRO PARTICLE PROCESSOR FOR INTERNAL-COMBUSTION ENGINE

摘要

PURPOSE:To prevent counterflow of exhaust to air feed path by placing a check valve for allowing only such air flow to mixture gas feed path in the air feed path at the downstream of exchange valve for exchanging air to the mixture gas feed path or to the atmosphere. CONSTITUTION:A fuel injection valve 10 is provided at the base of mixture gas feed pipe 7 for feeding mixture gas to a burner 3, where the downstream end section of air feed pipe 11 is coupled to said pipe 7 at the lower end section of said valve 10 while an air pump 12 is fixed at the upstream end section of said pipe 11. While a diaphragm exchange valve 13 is placed in the way of air feed pipe 11 to feed the air form air pump 12 to mixture gas feed pipe 7 upon supply of negative pressure air from negative pressure pump 15. Furthermore, a check valve 20 for allowing only air flow to the mixture gas feed pipe 7 from air pump 12 is provided in the way of air feed pipe 11 in the downstream of exchange valve 13.