Exhaust gas cleaning system for an internal combustion engine
An exhaust gas cleaning system is disclosed for an internal combustion engine having a cylinder head with a plurality of exhaust valve ports therein associated with respective exhaust valves and an exhaust passage for discharge of exhaust gases to an exhaust system. The exhaust passage is constituted by a manifold exhaust port which is connected to the exhaust system and a plurality of branch ports which branch from the manifold exhaust port and communicate with respective exhaust valve ports. A secondary air passage is directly connected to the respective branch exhaust ports for supplying secondary air thereto in immediate proximity to the exhaust valves. Each secondary air passage is composed of a manifold secondary air passage opening externally of the cylinder head and branch secondary air passages branching from the manifold secondary air passage and communicating with the branch exhaust ports.
- Assignee:
- Honda Giken Kogyo Kabushiki Kaisha (Japan)
- Patent Number(s):
- US 4417442
- OSTI ID:
- 5219664
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330100 -- Internal Combustion Engines
330700* -- Advanced Propulsion Systems-- Emission Control
AIR POLLUTION CONTROL
CHEMICAL REACTIONS
CLEANING
COMBUSTION
COMBUSTION CHAMBERS
CONTAINERS
CONTROL
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST SYSTEMS
FLOW REGULATORS
FLUIDS
GAS CYLINDERS
GASEOUS WASTES
GASES
HEAT ENGINES
HIGH TEMPERATURE
INTERNAL COMBUSTION ENGINES
MOTORCYCLES
OXIDATION
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
THERMOCHEMICAL PROCESSES
VALVES
VEHICLES
WASTES