Exhaust gas cleaning system for multi-cylinder internal combustion engines
An exhaust gas cleaning system for a multi-cylinder internal combustion engine is described comprising combustion chambers, an exhaust system having exhaust ports opening into respective combustion chambers, a secondary air supplying system communicating with the exhaust system for supplying secondary air to the exhaust system, and reed valve means interposed in the secondary air supplying system and adapted to open or close in response to pulsations of exhaust gas developed in the exhaust system during engine operation for controlling supply of secondary air to the respective exhaust port independently of each other. The secondary air supplying system includes single common inlet passage means leading to the ambient atmosphere for feeding secondary air to the reed valve means and outlet passage means connected to the exhaust ports, respectively. The reed valve means include reed valve members and upstream and downstream chambers formed at opposite sides of the reed valve members, respectively. The upstream chambers are formed independently of one another for connection to the common inlet passage means while the downstream chambers are formed independently of one another and communicate with the respective outlet passage means, and a cylinder head cover. The inlet passage means as well as at least part of the outlet passage means, the reed valve members the upstream and downstream chambers all are in the cylinder head cover.
- Assignee:
- Honda Giken Kogyo Kabushiki Kaisha, Tokyo
- Patent Number(s):
- US 4727717
- OSTI ID:
- 5162149
- Country of Publication:
- United States
- Language:
- English
Similar Records
Exhaust gas cleaning device of internal combustion engines
Exhaust gas cleaning device for internal combustion engine
Related Subjects
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR FLOW
AIR POLLUTION CONTROL
CLEANING
COMBUSTION CHAMBERS
CONTROL
CONTROL EQUIPMENT
DUCTS
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST SYSTEMS
FLOW REGULATORS
FLUID FLOW
FLUIDS
GAS FLOW
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
VALVES
WASTES