Air intake side secondary air supply system for an internal combustion engine

Patent · Tue Mar 10 00:00:00 EST 1987

OSTI ID:6977245

Kobayashi, H; Tomobe, N

This patent describes an air intake side secondary air supply system for an internal combustion engine having a choke valve and a throttle valve in an intake air passage. The system is adapted to supply an air intake side secondary air into an intake air passage downstream of the throttle valve by a control valve and in response to an operating condition of the engine during a cold operation of the engine. The improvement described here comprises means for detecting a no-load operating state of the engine during the cold operation of the engine in which the choke valve is actuated to close the intake air passage, and means for stopping a supply of the air intake side secondary air upon detection of the non-load operating state so as to enrich an air-fuel mixture supplied to the engine.

• Assignee: Honda Giken Kogyo Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4648374
• OSTI ID: 6977245
• Resource Relation: Patent File Date: Filed date 26 Sep 1985
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
FUEL-AIR RATIO
INTAKE STRUCTURES
AIR FLOW
MIXTURES
OPERATION
VALVES
CONTROL EQUIPMENT
DISPERSIONS
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
GAS FLOW
HEAT ENGINES
MECHANICAL STRUCTURES
330100* - Internal Combustion Engines