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Effect of Exhaust Gas Recirculation on Automotive Ring Wear
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English
Abstract
The effect of exhaust gas recirculation on the wear of automobile engine piston rings was investigated by means of the radioactive isotope tracing method. The experiments were performed on a test facility especially designed for lubricating oils, fuels and additives, for their effect on piston ring wear.
The piston ring wear rate was recorded during a series of experiments at different engine operating conditions and various amounts of exhaust gas recycling. At the same time, all engine parameters were recorded and the brake specific fuel consumption determined. The exhaust gas was analyzed for the nitrogen oxides content.
When 12% of exhaust gas was recycled into the inlet manifold the following results were obtained:
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1.
A 90% reduction of ring wear at a steady state operation.
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2.
A 50% reduction of ring wear when the engine was operated on a simulated traffic pattern.
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3.
A 60–80% reduction in nitrogen oxides in the exhaust gas.
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4.
A 0–4% increase in the brake specific fuel consumption.
Citation
Kopa, R., Jewell, R., and Spangler, R., "Effect of Exhaust Gas Recirculation on Automotive Ring Wear," SAE Technical Paper 620121, 1962, https://doi.org/10.4271/620121.Also In
References
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