US 11,808,234 B2
Cover for internal combustion engine
Kensuke Doi, Obu (JP); and Yoji Horiuchi, Kariya (JP)
Assigned to TOYOTA BOSHOKU KABUSHIKI KAISHA, Aichi-ken (JP)
Appl. No. 17/925,370
Filed by TOYOTA BOSHOKU KABUSHIKI KAISHA, Aichi-ken (JP)
PCT Filed Jun. 29, 2021, PCT No. PCT/JP2021/024624
§ 371(c)(1), (2) Date Nov. 15, 2022,
PCT Pub. No. WO2022/024639, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 2020-126502 (JP), filed on Jul. 27, 2020.
Prior Publication US 2023/0193850 A1, Jun. 22, 2023
Int. Cl. F02F 7/00 (2006.01); F02B 67/06 (2006.01)
CPC F02F 7/0068 (2013.01) [F02B 67/06 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A cover for an internal combustion engine, the cover being attachable to an engine main body and covering a timing chain or a timing belt, the cover comprising:
a first member that includes a facing surface, the facing surface facing the engine main body; and
a second member that is made of a material different from the first member and is joined to the first member, wherein
a groove portion is provided only in the facing surface of the first member,
a seal member is fitted in the groove portion to provide a seal between the first member and the engine main body,
the second member is plastic and includes:
an insertion hole that receives an engine valve operation mechanism that is coupled to a camshaft; and
an attachment portion provided in a peripheral portion around the insertion hole, the engine valve operation mechanism being attached to the attachment portion, and
the second member is made of a material that satisfies at least one of a condition that a coefficient of linear expansion is lower than that of the first member or a condition that a water absorbency is lower than that of the first member.