JPS6017375Y2 - Cab over truck intake system - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an intake system for a cab over truck.

In a cab over truck, an air cleaner is sometimes disposed below a bed provided at the rear of the cab in order to lower the floor of the cab and make effective use of dead space.

In order to introduce outside air into the air cleaner located below the bed in this way, conventional methods have been to introduce outside air into the air cleaner from the front end of the frame, or to install an inlet duct behind the back panel of the cab and A device that introduces outside air from a Since the inlet leading to the air cleaner becomes longer, there is a drawback that intake resistance increases.

The present invention has been developed in view of the above circumstances, and is capable of making it difficult for rainwater, muddy water, etc. to be sucked into the air cleaner, allowing efficient intake of air without increasing intake resistance, and suppressing intake noise. The purpose of the present invention is to provide an air intake system for a cab over truck that can be used.

The present invention will be described below with reference to an embodiment shown in the drawings.

In the figure, an engine 3 is mounted on a frame 2 mounted on a tire 1 via a suspension device such as a spring (not shown), and a cab 4 that covers the engine 3 is mounted thereon.

A floor panel 5 of the cab 4 is raised in a stepped manner behind the seat 6 to support a bed 7.

One side of the engine 3 is covered with a side cover 8 fixed to a floor panel 5 of the cab 4, and an engine room is formed inside this cover 8.

An air cleaner 9 is disposed below the bed 7 on the outside of the side cover 8 that separates the engine room, and a discharge port 10 provided in the air cleaner 9 and an intake port of the engine 3 are connected to each other by an elastic force (not shown). The body is connected to the body through an intake duct.

An intake port 11 is provided at the front of the air cleaner 9.

Although the intake port 11 does not necessarily require a duct, in some cases, a very short duct may be provided as shown in FIG.

Further, in front of the air intake port 11, the floor panel 5
゜Side cover 8. Side panel 12 of cab 4 and front inner fender 13 attached to cab 4
A box-shaped intake introduction passage 14 along the front-rear direction
is formed.

Further, the lower part of the air cleaner 9 is covered with a splash board 15 attached to the cab 4 and an air cleaner protector 16 that connects the splash board 15 and the front inner fender 13. A duct 17 that is continuous with the intake air introduction passage 14 is formed in the rear space of the intake air intake passage 9, and a sound absorbing material 18 such as glass wool is stretched on the inner surfaces of the duct 17 and the intake air introduction passage 14.

In the intake device having such a configuration, the intake port 11 of the air cleaner 9 passes through the intake introduction passage 14 formed of a panel material such as the floor panel 5 intake and the front inner fender 13.
Since the passage 14 is significantly wider than a so-called inlet duct, there is almost no intake resistance at the air intake port 11 of the air cleaner 9.

In addition, since the length of the passage 14 that guides the outside air to the intake port 11 can be increased in the above-described manner, the air-moisture effect against rainwater, muddy water, etc. that tries to flow in together with the outside air is high, so that the air cleaner 9 does not receive rainwater, etc. It is not sucked in, and therefore the life of the filter element can be extended.

Furthermore, since the passage 14 is box-shaped and has a sound-absorbing material 18 stretched on its inner surface, the passage 14 can muffle the intake noise that tends to leak outside from the intake port 11, and Since the duct 17 is also formed in the rear space of the air cleaner 9, intake noise does not leak to the rear.

Furthermore, needless to be described in detail, since the air cleaner 9 is installed outside the side cover 8, that is, outside the engine room, the intake air will not be warmed by heat radiation from the engine 3, and a decrease in intake efficiency can be prevented. .

As described above, according to the intake device according to the present invention, the special structure of the cab in a cab over truck can be fully utilized to improve the intake efficiency, and the air-water separation effect can also be improved. In addition, the connection distance between the engine and the air cleaner can be shortened without requiring an extremely long inlet duct as in the past, and the inner surface of the intake passage is lined with sound-absorbing material, which greatly reduces intake noise. Sound leakage to the outside can be significantly controlled.

[Brief explanation of the drawing]

FIG. 1 is a front view of a cab over truck equipped with an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 3 is a view taken along arrow B in FIG. 3...Engine, 4...Cab, 5.
...Floor panel, 7...Bed, 8.
... Side cover 9 ... Air cleaner, 11 ... Intake port, 12 ... Side panel, 13 ... Front inner fender, 14
...Intake introduction passage 17...Duct,
18...Sound absorbing material.

Claims (1)

[Scope of utility model registration request] In a cab over truck in which an air cleaner is arranged below a head provided at the rear of the cab, an air cleaner is arranged outside a side cover that separates an engine room, and an intake port is opened in the front part of the air cleaner, and In front of this intake port, an intake introduction passage along the front-rear direction is formed in a box shape by the floor panel and side panel of the cab, the side cover, and the front inner fender attached to the cab. An intake system for a cab over truck, characterized in that a sound absorbing material is provided on the inner surface of the intake air introduction passage.