The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 2019
Filed:
Nov. 29, 2017
Mahle Filter Systems Japan Corporation, Tokyo, JP;
Junpei Omichi, Kawagoe, JP;
Yuya Yamashita, Tokyo, JP;
MAHLE FILTER SYSTEMS JAPAN CORPORATION, Tokyo, JP;
Abstract
Disclosed is an evaporated fuel processing apparatus for an internal combustion engine including: a canister; and a purge passage supplying purge gas including evaporated fuel separated from the canister to an intake system therethrough; characterized in that the evaporated fuel processing apparatus further comprises a pulsation pump supplying the purge gas to the intake system by using a pumping action responding to intake pulsation generated in an intake passage of the internal combustion engine. The pulsation pump includes: a first chamber; a communication passage communicating with the first chamber and the intake passage; an elastic body being deformed depending on pressure fluctuation of the first chamber; a second chamber formed so as to surround the elastic body; a suction port provided with a check valve allowing inflow of gas into the second chamber, and a discharge port provided with a check valve allowing outflow of gas from the second chamber.