Secondary air feeding system using for exaust of forced air-cooling engine

A secondary air and forced air cooling technology, which is applied to the cooling of engines, engine components, combustion engines, etc., can solve the problems of difficult compact layout, complex structure, large secondary air supply system, etc., and achieve simplified forming and compact cylinder head , Reduce the effect of thermal influence
CN1187517CInactive Publication Date: 2005-02-02SUZUKI MOTOR CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZUKI MOTOR CORP
Publication Date
2005-02-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The cylinder head or the like is surrounded by a cooling wind cowling to cool the cylinder head or the like with a cooling fan in this forced air cooling type engine of a motorcycle. A secondary air reed valve is arranged on an exhaust system to feed the secondary air to an exhaust path via the secondary air reed valve in this secondary air feeding device for the exhaust. The secondary air reed valve is integrally incorporated in the cylinder head and surrounded by the cooling wind cowling to be invariably exposed to the cooling wind introduced into the cooling wind cowling.
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Description

technical field

[0001] The invention relates to a forced air-cooled engine for a motorcycle, in particular to an arrangement of a secondary air supply system for a forced air-cooled engine for a motorcycle. Background technique

[0002] It is known that secondary air is usually supplied to the exhaust system in order to purify the exhaust gases expelled from the motorcycle engine. The structure of such motorcycle engine secondary air supply system is to guide the air through the air filter into the exhaust port of the cylinder head, and oxidize the unburned components in the exhaust gas, thereby reducing the air pollution of the exhaust gas.

[0003] The structure of a common secondary air supply system is shown in FIGS. 1A and 1B . There is a secondary air valve 120 (integrated with a switch valve and a pilot valve), which is arranged close to the cylinder block of the engine 100. The cylinder block is denoted by 110, the air sucked through the air filter (not shown) is in...

Claims

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