VAPORIZED FUEL PROCESSING APPARATUS
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United States of America Patent
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Issued Date -
May 12, 2016
app pub date -
Oct 26, 2015
filing date -
Nov 7, 2014
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Abstract
A vaporized fuel processing apparatus for an engine, which includes an air supply passage equipped with a throttle valve, has an adsorbent canister and a purge passage communicating the adsorbent canister with the air supply passage of the engine. The adsorbent canister is adapted to communicate with a fuel tank. The purge passage includes a first purge passage and a second purge passage such that the first purge passage is formed in parallel with the second purge passage. The first purge passage has a first purge valve. The second purge passage has in series a second purge valve and a purge pump. The first purge passage and the second purge passage are configured such that pressure loss in the second purge passage is less than pressure loss in the first purge passage.
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