Internal combustion engine of a lean air-fuel mixture combustion type

Patent · Tue Nov 15 00:00:00 EST 1977

OSTI ID:5143482

Tanahashi, T

An internal combustion engine of a lean air-fuel mixture combustion type has a valve guide and an intake valve supported by the valve guide. A pumping chamber is formed between the inner wall of the valve guide and the outer wall of the valve stem of the intake valve. The valve head has on its outer wall an injection nozzle connected to the pumping chamber. When the intake valve returns to its closing position at the time of the intake stroke, a fuel is injected from the injection nozzle into the combustion chamber filled with a lean air-fuel mixture whereby, a rich air-fuel mixture layer is formed in an ignition area around the spark gap of the spark plug.

• Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
• Patent Number(s): US 4058091
• OSTI ID: 5143482
• Resource Relation: Patent Priority Date: Priority date 21 Jan 1976, Japan
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
FUEL SYSTEMS
STRATIFIED CHARGE ENGINES
DESIGN
AIR POLLUTION ABATEMENT
FUEL INJECTION SYSTEMS
FUEL-AIR RATIO
NOZZLES
PUMPS
VALVES
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
POLLUTION ABATEMENT
330603* - Vehicle Design Factors- Engine System
330700 - Advanced Propulsion Systems- Emission Control