Honda Giken Kogyo Kabushiki Kaisha

Masaaki Hiratani

Koji Okazaki

Toshio Yokoyama

Hidehito Ikebe

Yasuo Kitami

Hiroyuki Niikura

Yasuaki Asaki

Hiroo Shimada

An engine cooling system comprises a cooling water circulation circuit interconnecting an engine body and a radiator, a bypass circuit connected to the cooling water circulation circuit to bypass the radiator, an electric-powered water pump disposed in the cooling water circulation circuit adjacent an engine inlet, a flow rate control valve for controlling the flow rate of cooling water flowing through the radiator, an outlet water temperature detector for detecting an engine outlet water temperature in the cooling water circulation circuit, an inlet water temperature detector for detecting an engine inlet water temperature in the cooling water circulation circuit, and a control means for controlling the operation of the water pump in accordance with at least the engine outlet water temperature and controlling the operation of the flow rate control valve in accordance with at least the engine inlet water temperature to thereby properly control the temperature of the cooling water in accordance with the operational condition of the engine.

Engine cooling system

In an intake device for a multi-cylinder internal combustion engine, comprising a pair of resonance chambers and a pair of resonance passages, the resonance chambers and the resonance passages are disposed in parallel in a V-space in the internal combustion engine with a dividing wall interposed therebetween, thereby providing a compact intake system. In the intake device, the resonance chambers are defined in one of upper and lower assembly box portions, while the resonance passages are defined in the other assembly box portion, and an on-off valve capable of changing suction characteristics of the internal combustion engine is provided in a plate-like valve unit separating and joined to the opened surfaces of the two box portions. This enables a reasonable layout of the on-off valve. Further, in the intake device, the resonance chambers are capable of communicating with each other through a communication chamber having a predetermined volume. This ensures both a resonance supercharge effect and an inertia supercharge effect.

Intake device for multi-cylinder internal combustion engine

Growing community of inventors

Saitama, Japan

Masaaki Hiratani