Dilution controlled lean burn system
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United States of America Patent
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Sep 3, 1996
Grant Date -
N/A
app pub date -
Feb 2, 1995
filing date -
Aug 10, 1992
priority date (Note) -
Expired
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Abstract
Lean burn, exhaust gas recirculating internal combustion engine system (10) and process of operation wherein a motor driven valve (16) governs tapping of exhaust gas via a conduit (11) to the high pressure side of a throttle (14) in an air intake region of the engine with control of the valve and lean burn to maintain a) lean operation with high exhaust dilution at light engine loads, b) high exhaust dilution and high overall dilution at medium to high engine loads and c) smooth transition between a) and b).
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