Exhaust gas recirculation apparatus for engine with turbocharger

Patent · Tue Jun 02 04:00:00 EDT 1987

OSTI ID:6365550

Nakamura, H; Matsuo, S; Kawai, N

This patent describes an exhaust gas recirculation apparatus for an internal combustion engine having an intake air passage and an exhaust gas passage connected thereto. The apparatus comprises: an exhaust gas recirculation passage connecting the exhaust gas passage to the intake air passage for recirculating the exhaust gas into the intake air passage; and a vacuum-operated exhaust gas recirculation control valve disposed in the exhaust gas recirculation passage for controlling the flow of the exhaust gas to be recirculated. The exhaust gas recirculation control valve comprises a diaphragm for receiving admitted operating vacuum such that the valve closes when the absolute value of the admitted operating vacuum is lower than the absolute value of a first predetermined vacuum value and opens when the absolute value of the admitted operating vacuum is higher than the absolute value of the first Predetermined vacuum value.

• Assignee: Toyota Jidosha Kabushiki Kaisha, Aichi
• Patent Number(s): US 4669442
• OSTI ID: 6365550
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
COMPRESSORS
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW REGULATORS
FLUID FLOW
FLUIDS
GAS FLOW
GASEOUS WASTES
GASES
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
POLLUTION CONTROL EQUIPMENT
PRESSURE REGULATORS
SUPERCHARGERS
TURBOCHARGERS
VACUUM SYSTEMS
VALVES
WASTES