JPS58158314A - Cooling air guiding structure for engine - Google Patents

Abstract

PURPOSE:To contrive the falling of temperature of a supercharger and prevent the thermal damage of a suction pipe from occurring, by providing a cooling air guide, which guides cooling air to an exhaust pipe and the supercharger, between the suction pipe and the exhaust pipe and the supercharger provided at a location displaced from the suction pipe. CONSTITUTION:A cooling fan 2 to be driven by a fan belt 16 is provided between a main body 1 of an engine and a radiator 3 arranged in front of the main body 1, a rear end of the main body 1 of the engine is provided with an air cleaner 6 and a suction pipe 7 is connected with a suction port 9 located at the right side of the front of the radiator. The upper part of the side right of the main body 1 of the engine is provided with a supercharger 10 which is connected with a suction connecting pipe 17 and an exhaust pipe 11. A cooling air guide 20 guiding cooling air from a cooling fan 2 to the supercharger 10 and the exhaust pipe 11 is installed among the suction pipe 7, the supercharger 10 and the exhaust pipe 11.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling air guide structure suitable for a tractor engine.

In conventional tractor engines equipped with a supercharger, the cooling effect on the supercharger and exhaust pipe is low, so the overall cooling efficiency of the engine is low.

There is a problem that the temperature of the supercharger increases and the compression capacity decreases. In addition, the alternator also receives heat from the exhaust pipe and its temperature rises, resulting in a low power generation capacity, and there is also the problem that the rubber intake pipe connected to the air cleaner may be damaged by the heat from the supercharger or exhaust pipe.

In order to solve the above conventional problems, the present invention provides a cooling air guide that guides cooling air to the exhaust pipe, and the cooling air guide is pressurized to protect the air cleaner intake pipe from the heat of the exhaust pipe. , according to figure rki) The explanation is the following 0**.

The 11th ii is Totta! Schematic diagram of the right side of the engine installed in 1g! The figure is a view when viewed from the arrow 401-1 in FIG.

In the 1111I, a cooling fan is installed in front of the engine body 1, and in front of the 7 An 2, there is a Fujini! Hatake is the setting. The fan 2 and the fugiator 8 are located above the upper surface of the main body, so that a large amount of cooling air is sent rearward from the fan along the upper surface 6 as indicated by the arrow F. An air cleaner 6 is provided above the rear end of the main body 1, and an intake pipe 7 connected to the air starter extends above the main body 1 toward the cooling fan 3 side, and the intake port 9 at the tip is on the upper surface of the fusiator Hatake O. It's an afterthought. The intake pipe 7 is made of a plumb type material, so that vibrations during engine operation can be absorbed by tempering, and misalignment during installation can also be absorbed. The supercharger 10 is provided above the middle part in the front bale direction of the main body 10, and the exhaust pipe 1 is connected from the front of the supercharger 1O.
1 is sharpening upward. Each of the above-mentioned parts is covered by the bonnet 12 from above and from all directions.

In FIG. 2, O-O is a vertical center plane that includes the center of the crankshaft 18 of the engine, and the engine is mounted on the vehicle with the center plane 0-0 extending in the longitudinal direction of the vehicle body. The intake pipe 7 extends from the left side of the air cleaner 6 toward the right front), and the intake port 9 is located on the right side of the radiator field.

Almost the entire intake pipe is located on the right side of the center plane (O-0). The supercharger 4i110 and the exhaust pipe 11 are located above the left side of the main body 1, and the alternator 16 is arranged in front of the exhaust pipe 11, that is, above the left corner of the front end of the main body 1.

16 is a fan bet that connects the pulley of the alternator 16 and the cooling fan 2 to the pulley on the crankshaft 18; 1 is a connecting pipe that connects the left end outlet of the turbocharger 10 and the air cleaner 6; and 19 is an intake pipe from the turbocharger 10. This is a connecting pipe that passes below 7 and connects to the intake manifold (not shown) on the right side of the main body l. -Although not shown, the exhaust manifold extends upward along the left side of the main body 10, and the exhaust manifold extends upward from below to the supercharger 1.
*Continues from 0.

Supercharger l., exhaust pipe 11. Alternator 15, intake pipe and 0IIK&lil! A cooling air guide 2 made of a straight plate is provided. The guide 20 runs from the right front end of the main body 1 near the intake port 9 to the left middle section of the main body 1 near the supercharger 81110, generally along the intake pipe 7 (also inclined with respect to the center plane 0-OK).
The horizontal part 11 of the lower part is fixed to the main body IK with bolts 21.

The guide 2, like the one 111, protrudes upward like the intake pipe 7 and is in contact with or close to the lower surface of the bonnet 12.

According to the structure of the present invention explained above, the engine main body 10
A cooling fan 2 is provided at the end of the arm (one end).

An air cleaner 6 is provided above the rear end i1 (m end) of the body 1, and the air cleaner intake pipe γ extends to the cooling fan 8.
For supercharging ill O, exhaust pipe 11. :The alternator 15 is installed at a position Km on the opposite side of the cooling air guide 20, and the guide 20 guides the cooling air toward the exhaust pipe 11, so the exhaust pipe 11 is efficiently cooled and the entire engine is cooled. In addition to increasing the cooling effect of the supercharger 4111G, the temperature of the supercharger 4111G can be lowered to increase the compression capacity, and the temperature of the alternator 15 can be lowered to increase the power generation capacity. Furthermore, the radiant heat from the exhaust pipe 11, etc. is cut off by the cooling air guide 20, and is hardly transmitted to the intake pipe γKu, so that the intake pipe 7 can be prevented from being damaged by heat. As mentioned above, since the exhaust pipe 11 and the supercharger 10 can be efficiently cooled, the amount of radiant heat from the exhaust pipe 11 and the supercharger 100 can be reduced, and in this respect, thermal damage to the intake air 'i1'7 can also be prevented.

Note that when embodying the present invention, the front-back and left-right positions of each part can be reversed. alternator 15'i
It can also be installed in other locations.

[Brief explanation of drawings]

Figure 1 is a schematic diagram of the right-hand side of the screen example, and Figure 2 is a schematic view of the 1- side of Figure 1.
It is a view when viewed from the first arrow. 1. ...Engine body%2...
Cooling fan, 6... Air cleaner, 7... Intake pipe,
10...Supercharger, 11...Exhaust pipe, 20...Cooling air guide

Claims (1)

[Claims] A cooling fan is installed at one end of the engine body, an air cleaner is installed above the end of the engine body, the intake pipe for the air cleaner is born toward the cooling fan side, and the exhaust pipe and supercharging are located at the nine positions offset from the intake pipe. A cooling air guide structure for an engine, characterized in that a cooling air guide is provided between an exhaust pipe, a supercharger, and an intake pipe for guiding cooling air to the exhaust pipe and the supercharger.