Internal combustion engine

Patent · Tue Dec 08 04:00:00 EST 1981

OSTI ID:5474690

Etoh, Y; Tanaka, T

An internal combustion engine is disclosed which includes active cylinders being always active and inactive cylinders being inactive when the engine is below a predetermined value. The engine has an exhaust passage divided by a partition into first and second branches leading from the active and inactive cylinders. The second branch is connected through an EGR passage with the inactive cylinders at low load conditions. An exhaust gas sensor is provided in a through-hole formed in the partition at a position downstream of the opening of the EGR passage for monitoring one content of the engine exhaust to provide a signal indicative of the air/fuel ratio. The second branch has a volume, upstream of the opening of the EGR passage, larger than the stroke volume of the inactive cylinders.

• Assignee: Nissan Motor Co Ltd (Japan)
• Patent Number(s): US 4304208
• OSTI ID: 5474690
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330700 -- Advanced Propulsion Systems-- Emission Control
AIR POLLUTION CONTROL
CONTROL
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLUIDS
FUEL ECONOMY
FUEL-AIR RATIO
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
WASTES