公开(公告)号：US20200208551A1

公开(公告)日：2020-07-02

申请号：US16683394

申请日：2019-11-14

Applicant: KUBOTA Corporation

Inventor： Kentaro NAGAI ,  Takahiro YAMAZAKI ,  Reo YOSHIDA ,  Tomoya AKITOMO ,  Shoichi OKIMI

IPC: F01M13/00 ,  F02M25/06 ,  F02B75/20

Abstract: A cylinder head cover that prevents the gas outlet for the blow-by gas from being cooled by structural improvements so that the gas outlet does not freeze or become clogged in a cold condition. A cylinder head cover includes: a gas passage through which blow-by gas from a crankcase passes; and a gas outlet portion protruding upward from a head cover upper wall. The gas outlet portion includes a protruding case portion bulging upward from the head cover upper wall so as to form an outlet passage through which blow-by gas passes, and an air layer is formed outside the outlet passage in the protruding case portion.