Exhaust gas recirculation for a diesel engine

Patent · Tue Sep 16 04:00:00 EDT 1980

OSTI ID:6648083

Sami, H; Ueda, T

Disclosed herein is an exhaust gas recirculation control valve for a diesel engine. The valve comprises a valve casing, disposed in the intake line of the engine, of a rectangular cross sectional shape. A valve seat connected to an exhaust line of the engine via an egr passageway is formed in a side wall of the rectangular shaped valve casing. A valve member of a plate shape is arranged in the casing and is rotated about an axis located upstream of the valve seat in such a manner that the valve member is moved between a position wherein the plate closes the valve seat and another position wherein the plate closes the intake passageway. The valve device is operated by an actuator means including a vacuum actuator connected to the valve plate and a vacuum generator which transmits a vacuum signal into the actuator in accordance with the load of the engine.

• Assignee: Toyota Jidosha Kogyo K K (Japan)
• Patent Number(s): US 4222356
• OSTI ID: 6648083
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
330700 -- Advanced Propulsion Systems-- Emission Control
CONTROL EQUIPMENT
DIESEL ENGINES
ENGINES
EQUIPMENT
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW REGULATORS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
POLLUTION CONTROL EQUIPMENT
VALVES