Head cover structure of engine and suspension structure thereof

Patent metadata

Field	Value
Publication number	US-9566855-B2
Application number	US-201414535804-A
Country	US
Kind code	B2
Filing date	Nov 7, 2014
Priority date	Nov 8, 2013
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

Provided is a head cover structure of an engine, which is capable of increasing supporting rigidity of a head cover. The engine includes a driving force transmission mechanism for transmitting a driving force of a crankshaft to a valve train, in which the head cover includes a bulging portion for covering an upper side of the driving force transmission mechanism on one end side thereof in a cylinder row direction, and an engine mounting portion is attached to the bulging portion. The bulging portion is provided with an inclined surface portion having an inclined surface inclined downwardly toward the other end side in the cylinder row direction, and the inclined surface is formed to rise upwardly from an intermediate position in the cylinder row direction so as to be continuous with a top surface of the bulging portion on the one end side in the cylinder row direction.

First claim

The invention claimed is:

1. A head cover structure of an engine in which an engine mounting portion for suspending the engine on a vehicle body frame is attached to an upper surface of a head cover for covering a valve train,
wherein the engine includes a driving force transmission mechanism for transmitting a driving force of a crankshaft to the valve train on one end side in a cylinder row direction,
wherein on the one end side in the cylinder row direction of the head cover, a bulging portion for covering an upper side of the driving force transmission mechanism is provided,
wherein the engine mounting portion is attached to the bulging portion,
wherein the bulging portion is provided with an inclined surface portion having an inclined surface which is inclined downwardly toward the other end side in the cylinder row direction,
wherein the inclined surface is formed to rise upwardly from an intermediate position in the cylinder row direction so as to be continuous with a top surface of the bulging portion on the one end side in the cylinder row direction, and
wherein an opening portion is formed on a side wall on the one end side in the cylinder row direction of the bulging portion, a cover member for closing the opening portion is provided, a part of the cover member is fastened to the head cover, and the remainder of the cover member is fastened to a cylinder head, the bulging portion of the head cover is provided with a first fastening portion for fastening the engine mounting portion to the head cover, the bulging portion of the head cover is further provided with a second fastening portion for fastening the cover member to the head cover, and a fastening direction of the first fastening portion and a fastening direction of the second fastening portion are substantially perpendicular to each other.

2. The head cover structure of the engine according to claim 1 ,
wherein the head cover is formed with a rib extending in the cylinder row direction, and
wherein one end side of the rib is continuous with the bulging portion.

3. The head cover structure of the engine according to claim 1 ,
wherein the cover member includes a head cover covering portion which is fastened to the head cover, and a cylinder head covering portion which is fastened to the cylinder head, and
wherein the cover member is fastened across mating surfaces of the cylinder head and the head cover.

4. The head cover structure of the engine according to claim 1 ,
wherein a plurality of first fastening members which are fastened to the first fastening portion are provided apart from each other in a direction intersecting the cylinder row direction, and
wherein at least one second fastening member which is fastened to the second fastening portion is located in a range between axis lines of the first fastening members adjacent to each other.

5. The head cover structure of the engine according to claim 4 ,
wherein the bulging portion is formed with a through-hole through which an oil control valve is inserted,
wherein on one end portion in the cylinder row direction of the bulging portion, a boss portion for fastening the first fastening member and/or the second fastening member is formed to bulge out inside the head cover, and
wherein on an inner surface of the head cover, a rib for coupling the boss portion and a peripheral edge portion of the through-hole is provided.

6. The head cover structure of the engine according to claim 1 ,
wherein the head cover is formed with at least two openings for inserting members which are held through the head cover, and
wherein the head cover is provided with a rib for coupling at least the two openings in the cylinder row direction.

Assignees

• Honda Motor Co Ltd

Inventors

• Konishi Yukio
• Ogino Hirotaka

Classifications

• F02F7/0012

  Crankcases of V-engines · CPC title

• F02F7/0073

  Adaptations for fitting the engine, e.g. front-plates or bell-housings · CPC title

• F02F7/006

  Camshaft or pushrod housings · CPC title

• B60K5/12 Primary

  Arrangement of engine supports · CPC title

• B60K5/1216 Primary

  characterised by the location of the supports relative to the motor or to each other (B60K5/1225 takes precedence) · CPC title