Suction device for diesel engine

Abstract

Abstract PURPOSE:In a device for supercharging the inertia while utilizing the gas pole vibration in a resonant path provided in a suction system, to enable the inertia supercharge in the low speed region by constructing the resonace path with main and sub resonance paths and using each path while switching in accordance with the operating condition. CONSTITUTION:In the high and middle operating region of an engine 1, exchange valves 8a-8c are held at the position shown by the solid line by means of a controller. Consequently the air is supplied from an air cleaner 3 through a suction path 4 and main resonance paths 5a, 5b to each suction manifold 2a, 2b. While in the low speed operating region, said valves 8a-8c are exchanged to the position shown by the dashed line to flow the air into sub resonance paths 7a, 7b. since the resonant frequency of sub-resonance paths 7a, 7b is matched with the suction pulse frequency at the start of the engine in the cranking and idle circuit region, the start performance and the warming performance can be improved while increasing the suction volume efficiency and sesuring the output and torque of the engine.

Inventors

• 👤 Nobuji Eguchi
• 👤 江口　展司

Bibliographic Details