JPH0310342Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention fixes both sides of an engine cooling water radiator and an aftercooler that cools air from a supercharger through brackets, and The present invention relates to an aftercooler mounting structure for an automobile diesel engine, in which the aftercooler is disposed at a position.

[Problems with Prior Art] As is well known, a supercharged internal combustion engine is provided with an aftercooler for cooling the air that has been compressed and heated by the supercharger.

FIGS. 1 and 2 show such a conventional aftercooler installed together with a cooling water radiator, and the aftercooler 1 is installed at a position forward of the engine cooling water radiator 2 in the direction of movement of the vehicle body, The radiator 2 and the bracket 3 are fixed to each other. This bracket 3 is connected to the aftercooler 1 as shown in the figure.
and are provided on both sides of the aftercooler 1 so that both sides of the aftercooler 1 and the radiator 2 can be fixed to each other. Therefore, when fixing the aftercooler 1 and the radiator 2, if you insert the aftercooler 1 from the side, that is, from the direction of arrow A shown in FIG. That is, it had to be inserted from the direction of arrow B in FIG. In order to enable insertion from the direction of arrow B, the air pipe 4 of the aftercooler 1 must not interfere with the tank 6 of the radiator 5, and the vertical width L of the aftercooler 1 must be becomes larger,
This placed restrictions on ground clearance or space inside the driver's cabin.

Other conventional techniques include, for example,
There is a technique shown in microfilm No. 17401 (Japanese Utility Model Publication No. 118918/1983) in which an intercooler or aftercooler is provided in front of the radiator (away from the engine). However, this technique does not disclose any method for attaching the intercooler, and therefore, like the prior art shown in FIGS. 1 and 2, it is not possible to reduce the vertical width of the intercooler. There is a problem. This also imposes restrictions on ground clearance or space within the driver's cabin.

[Problems to be Solved] Therefore, an object of the present invention is to provide an aftercooler mounting structure that allows the vertical width of the aftercooler to be reduced and allows for easy mounting of a radiator.

[Means for Solving the Problems] According to the present invention, an engine cooling water radiator and an aftercooler for cooling air from a supercharger are fixed on both sides via brackets, and the aftercooler is placed in front of the radiator. In the aftercooler mounting structure for automotive diesel engines, a step is formed at the corner of the upper and lower tanks of the radiator, and the aftercooler air pipe is located outside the step, corresponding to the position of the step. The cross-section of the air pipe is flat and has a bent portion forming a U-shape, and the tank is housed therein, and at least the side without the stepped portion of the bracket is formed separately from the bracket and the aftercooler. .

[Description of effects] Therefore, the vertical dimensions of the upper and lower tanks of the radiator are shortened by the steps formed at the corners, and the air pipe has a flat cross section at the position corresponding to the steps. Because it has a U-shape,
This increases the vertical distance between the upper and lower air pipes. Since the bracket for fixing the aftercooler and the radiator to each other is formed separately from the aftercooler and the radiator at least on the side without the stepped portion, the aftercooler can be inserted into the radiator. In this way, you can insert the aftercooler from the front, so
The vertical dimension can be smaller than that of a square type that is inserted from the front. The inner diameter of the air pipe of the aftercooler that protrudes behind the radiator can be made smaller than the outer diameter of the radiator by the amount accommodated in the bent portion, and the vertical width of the aftercooler can be reduced. That is, the present invention reduces the vertical protrusion of the air pipe as much as possible to reduce the vertical dimension, thereby eliminating restrictions on ground clearance and space within the driver's cabin, and facilitating its installation.

[Example] An example of the present invention will be described below with reference to FIGS. 3 and 4. Note that portions corresponding to those in FIGS. 1 and 2 showing the prior art are designated by the same reference numerals.

As shown in FIGS. 3 and 4, in the present invention, the bracket 3a for fixing the aftercooler 1 and the radiator 2 to each other is
The bracket 3a is formed separately from the radiator 2, and after the aftercooler 1 is inserted into a predetermined position relative to the radiator 2, it is fixed to each of them via bolts 7.
Aftercooler 1 and radiator 2 are fixed to each other via this bracket 3a. In addition, step portions 6a are formed at the corners of the upper and lower tanks 6, 6 of the radiator 2, and the air pipes 4, 4 of the aftercooler 1 are located in the step portions 6a, 6a. The portion corresponding to the position 6a has a flat cross section, forms a bent portion 8, and has a U-shaped side surface as shown in FIG. During assembly, even if the aftercooler 1 is inserted into the front position of the radiator 2 from the side, that is, from the direction of arrow C shown in FIG. 4, the bracket 3a will not get in the way due to the above-described structure. Since the aftercooler 1 can be inserted from the side in this way, the width between the insides of the air pipes 4 of the aftercooler 1 can be increased as shown in FIG.
La can be made smaller than the vertical width Lb of the radiator tank. Therefore, with the above structure, the vertical width L of the aftercooler 1 can be made smaller than before, ensuring sufficient ground clearance and making the space inside the driver's cabin larger.

[Effects of the invention] As described above, according to the invention, the aftercooler can be inserted into the radiator from the side, the vertical width of the aftercooler can be reduced, and the aftercooler can be placed in the radiator from the side. It can be made more compact. Furthermore, the installation work can be easily carried out without interference between the air pipe and the upper and lower tanks.

[Brief explanation of drawings]

Fig. 1 is a side view of the prior art, Fig. 2 is a view seen in the direction of arrow E in Fig. 1, Fig. 3 is a side view of the embodiment of the present invention, and Fig. 4 is a view in the direction of arrow F in Fig. 3. This is the diagram as seen in the figure. 1...Aftercooler, 2...Radiator, 3
...Bracket, 4...Air pipe, 6...Tank, 6a...Step part, 8...Bend part.

Claims (1)

[Scope of utility model registration request] In an aftercooler mounting structure for an automobile diesel engine, in which an engine cooling water radiator and an aftercooler for cooling air from a supercharger are fixed on both sides via brackets, and the aftercooler is disposed in a position in front of the radiator. , steps are formed at the corners of the upper and lower tanks of the radiator, and the air pipe of the aftercooler is located outside the step, and the cross section of the air pipe corresponding to the step is flat and forms a bent part, forming a U-shape. A mounting structure for an aftercooler of an automotive diesel engine, characterized in that the tank is housed in the bracket, and at least the side without a stepped portion is formed separately from the radiator and the aftercooler. .