Turbocharger exhaust gas recirculation system
A turbocharged internal combustion engine includes a bypass manifold interconnecting intake and exhaust manifolds for recycling exhaust gases back to the engine to reduce oxides of nitrogen. A compressor in the intake manifold is driven by a turbine in the exhaust manifold to pressurize intake air for the engine. The bypass manifold is connected to the intake manifold in a manner so that recycled exhaust gas does not flow through the compressor, to thereby eliminate undesirable exhaust contaminant buildup in the compressor. The bypass manifold includes a one-way valve to prevent the pressurized intake manifold air from backflowing into the exhaust system during full load operation. A control system regulates the differential pressure between the intake and exhaust manifolds by monitoring engine operating parameters. When a predetermined pressure differential is established between the exhaust and intake manifolds, the bypass manifold valve opens to recycle exhaust gases.
- Assignee:
- J. I. Case Co.
- Patent Number(s):
- US 3925989
- OSTI ID:
- 7357230
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330701* -- Emission Control-- Nitrogen Oxides
CHALCOGENIDES
COMPRESSORS
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
DESIGN
ENGINES
EQUIPMENT
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW REGULATORS
INTERNAL COMBUSTION ENGINES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
PRESSURE CONTROL
SUPERCHARGERS
TURBINES
TURBOMACHINERY
VALVES