JPH0314410Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an intake system for a vehicle internal combustion engine, and particularly relates to an improvement in the structure of an intake passage.

[Conventional technology]

FIG. 3 shows an intake system disclosed in, for example, Japanese Utility Model Application Publication No. 57-154523, and shows the intake system in the engine compartment of a cab-over type automobile.

That is, in the figure, 1 is a cab floor panel constituting the upper side of the engine room, and 2 is an engine. An intake duct 4 is connected to the intake manifold 3 of the engine 2, and the intake duct 4 is connected to an air cleaner (not shown) via an intake pipe 5. This intake pipe 5
is piped to the upper part of the rocker cover 6 of the engine 2.

[Problem that the invention attempts to solve]

However, in this way, the intake pipe 5
In the configuration in which the piping is installed above the rocker cover 6 of the engine 2, the intake pipe 5, the vehicle body, the cab floor panel 1
Because it is necessary to prevent interference with the intake pipe 5, etc., it is difficult to arrange the intake pipe 5. Additionally, as a countermeasure to this, it is also necessary to deform the intake pipe 5 into an ellipse or the like. As a result of deforming the intake pipe 5 in this way, a problem arises in that intake resistance increases.

Furthermore, when the engine 2 is to be maintained, inspected, etc., the intake pipe 5 becomes an obstacle, and there is also the disadvantage that the maintenance, inspection, etc. operations are hindered.

Incidentally, there are conventional techniques relating to the intake system in the engine room, such as those disclosed in Japanese Utility Model Application Publication No. 197509/1983, but no technique has been disclosed that can solve the above-mentioned conventional problems.

The present invention was developed in view of these conventional problems, and aims to improve the structure of the intake system in the engine room, improve piping of the intake system, and improve engine maintenance and inspection. With the goal.

[Means for solving problems]

Therefore, the present invention provides a part of the rocker cover of the engine with an integrally molded pipe part extending in a direction connecting opposite ends of one side of the rocker cover, and configures the pipe part as a part of the intake passage. did.

[Effect]

By making a part of the ROTSUKA cover function as an intake passage, there is no need to worry about piping such as intake pipes, and engine maintenance and inspection can be done easily.
This can be done without the intake pipe etc. getting in the way.

〔Example〕

Hereinafter, an embodiment of the present invention will be described based on FIG.

In the figure, 7 is the cylinder head of the engine;
Reference numeral 8 designates a rocker cover, and 9 and 10 designate an exhaust manifold and an intake manifold, which are respectively constructed on both left and right sides of the cylinder head 7 corresponding to the left and right sides of the vehicle.

A pipe portion 11 is integrally formed on a part of the rocker cover 8 and extends in a direction connecting opposite ends of the rocker cover 8, and the pipe portion 11 is a part of the intake passage. It is configured as an intake pipe 12.

That is, the pipe portion 11 is provided on the upper wall of the rocker cover 8 so as to extend in the left-right direction of the vehicle, and the portion of the pipe portion 11 located on the upper wall of the rocker cover 8 is formed into a flat, substantially rectangular shape from the upper surface of the rocker cover 8. It consists of a bulging portion 11a and a flat, substantially rectangular portion 11b recessed from the upper surface of the rocker cover 8. Further, both ends of the pipe portion 11 are formed in a cylindrical shape and are configured to protrude from the left and right surfaces of the rocker cover 8.

Intake manifold 1 of such pipe section 11
0 side opening end 11c and the intake manifold 1
The air intake port 10 a of No. 0 is connected to the air intake port 10 a through an air intake duct 13 . Further, the opening end 11d of the pipe portion 11 on the side of the exhaust manifold 9 and an air cleaner (not shown) are connected to each other via the intake duct 14.

As mentioned above, the intake pipe 1 is attached to the rock cover 8.
2, there is no need to provide an intake pipe 12 separately from the rocker cover 8. As a result, there is no need to take measures such as taking into account interference with the vehicle body, cab floor panel, etc., when installing the intake pipe in a narrow space within the engine room, and no effort is required in piping.

Furthermore, since the intake pipe 12 does not need to be deformed so much, the intake resistance can be reduced compared to the conventional one.

Furthermore, since the intake pipe 12 is integrated with the engine, when servicing or inspecting the engine,
The intake pipe 12 does not become a hindrance and does not interfere with work such as engine maintenance and inspection.

[Effect of idea]

As explained above, according to the present invention, by giving the rocker cover the function of an intake passage, there is no need to worry about the piping of the intake pipe as the intake passage, and engine maintenance and inspection can be carried out according to the requirements. This has a great practical effect as it can be carried out without the intake pipe etc. getting in the way.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of an intake system for a vehicle internal combustion engine according to the present invention, where A is a side sectional view and B is a side sectional view.
2 is a cross-sectional view taken along the line A--A in A, and FIG. 2 is a diagram showing an example of a conventional intake system for a vehicle internal combustion engine, where A is a front view and B is a side view. 8...Rotsuka cover, 10...Intake manifold, 11...Pipe section, 11c, 11d...
Opening end, 13...Intake duct.

Claims (1)

[Scope of utility model registration request] A pipe part extending in a direction connecting opposite ends of one side of the rocker cover is integrally formed on a part of the rocker cover of the engine, and the pipe part is configured as a part of the intake passage. Intake system for internal combustion engines for vehicles.