Cylinder head cover structure for engine

Patent metadata

Field	Value
Publication number	US-10731601-B2
Application number	US-201816031105-A
Country	US
Kind code	B2
Filing date	Jul 10, 2018
Priority date	Jul 14, 2017
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

A cylinder head cover structure for an engine includes a cylinder head cover. The cylinder head cover includes a metal cover member forming one end of the cylinder head cover in an engine length direction and a portion adjacent to the one end, and a resin cover member forming a portion of the cylinder head cover other than the metal cover member. The metal cover member is provided with a cam angle sensor attachment to which a cam angle sensor is attached, the cam angle sensor detecting a rotational position of a camshaft of the engine.

First claim

What is claimed is:

1. A cylinder head cover structure for an engine, the structure comprising:
a cylinder head cover covering a top of a cylinder head of the engine, the cylinder head cover including:
a metal cover member forming one end of the cylinder head cover in an engine length direction and a portion adjacent to the one end; and
a resin cover member forming a portion of the cylinder head cover other than the metal cover member, wherein

the metal cover member is provided with two cam angle sensor attachments to which two cam angle sensors are attached, respectively, the cam angle sensors being configured to detect a rotational position of a camshaft of the engine,
the two cam angle sensors are spaced apart from each other in an engine width direction,
a recess is formed on an end of the metal cover member toward the resin cover member in the engine length direction and in a center of the metal cover member in the engine width direction such that the recess is positioned between the two cam angle sensor attachments, the recess being notched on an opposite side from the resin cover member in the engine length direction,
a protrusion is formed on an end of the resin cover member toward the metal cover member in the engine length direction and in a center of the resin cover member in the engine width direction, the protrusion being configured to fit into the recess on the metal cover member,
a slot is formed in the center of the resin cover member in the engine width direction, the slot extending in the engine length direction toward the metal cover member to reach the protrusion, and
an injector and a top end of a cylinder pressure sensor are positioned in the slot in a vertical direction of the engine.

2. The structure of claim 1 , wherein
a chain cover is mounted to the end of the metal cover member away from the resin cover member in the engine length direction.

3. The structure of claim 2 , wherein
the chain cover is separated into a head cover and a block cover, the head cover corresponding to the cylinder head of the engine and the cylinder head cover, and the block cover corresponding to a cylinder block of the engine, and
a transmission is coupled to an end face of the cylinder block of the engine that is toward the metal cover member in the engine length direction, the transmission being coupled via the block cover of the chain cover.

Assignees

• Mazda Motor

Inventors

• Kashiwabara Takashi
• Fukui Suguru

Classifications

• F01M13/02

  by means of additional source of positive or negative pressure · CPC title

• F01M2013/027

  with a turbo charger or compressor · CPC title

• F01L1/344

  changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear · CPC title

• F01L1/053

  overhead type · CPC title

• F01M13/04

  having means for purifying air before leaving crankcase, e.g. removing oil · CPC title