Exhaust gas recirculation system of a multi-cylinder internal combustion engine

Patent · Tue Mar 25 04:00:00 EST 1980

OSTI ID:5693728

Amano, M; Tanahashi, T

Disclosed is a multi-cylinder engine having auxiliary valves in addition to intake and exhaust valves. A common exhaust gas passage is formed in the cylinder head and is connected to each of cylinders via the corresponding branches. Each of the auxiliary valves is arranged in a respective branch and opens at a time of the latter half of the exhaust stroke and at the end of the intake stroke, so that the auxiliary valve of one cylinder opens in synchronization with the opening operation of the auxiliary valve of another cylinder. The valve lift or the opening duration of the auxiliary valves of said one cylinder and another cylinder which are arranged adjacent to each other is set so as to be less than that of the auxiliary valves of said one cylinder and another cylinder which are not arranged adjacent to each another.

• Assignee: Toyota Jidosha Kogyo K K (Japan)
• Patent Number(s): US 4194472
• OSTI ID: 5693728
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330700 -- Advanced Propulsion Systems-- Emission Control
CHALCOGENIDES
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW REGULATORS
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
VALVES
WASTES