JPH03260317A - Cooling device for v type engine - Google Patents

Abstract

PURPOSE:To lower the height of a V type engine by arranging water jackets at respective cylinder heads, and arranging respective cooling water exhaust port, communicated with the water jackets and connected by means of a connection pipe in a straight line, at the bottom of the water jackets. CONSTITUTION:At cylinder heads 6-1, 6-2 in a V type engine, water jackets 22-1, 22-2 are arranged. At one side of the engine 2, cooling water exhaust ports 26-1, 26-2 which communicates with the water jackets and connected by means of a connection pipe 24 in a straight line are arranged lower than the water jackets. Namely, the water jackets are inclined from the outer side of each cylinder head to the inner side thereof. The cooling water exhaust ports 20 are arranged lower than inner end parts 22a-1, 22a-2 of the water jackets. The excessive space S which is at the space part 14 of the V type engine is used by connecting the respective cooling water exhaust ports 26 by means of connection pipe 24.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cooling system for a V-type engine, and particularly relates to a cooling system for a V-type engine that is mounted horizontally on a vehicle and also mounted tilted forward.
This invention relates to a cooling system for type engines.

[Conventional technology]

Engines include engines in which cylinders are connected in series, engines in which cylinders are connected in opposition, and ■-type engines, depending on the arrangement of the cylinders.

As shown in FIG. 4, the type 2 engine has a figure 7 shape by mounting the first and second cylinder heads 106-1 and 106-2 on the upper surface of the figure 7 cylinder block 104, respectively. First and second cylinder punctures 111-1.
112-2 is formed. A space 114 is formed between the first and second cylinder banks 1121 and 112-2, and a throttle valve body 120 and an intake manifold 116 equipped with a surge tank (not shown) in the lower part are arranged in this space 114. It is set up.

Furthermore, in recent years, emphasis has been placed on lowering the height of the hood of the vehicle and lowering the center of gravity in order to improve driving performance of type 1 engines. Therefore, as shown in FIG. 5, when the V-type engine 102 is mounted horizontally on the chassis 132, the clearance a becomes smaller, but the clearance b becomes larger, which prevents the height of the bonnet 134 from being lowered. Therefore, as shown in FIG. 6, the V-type engine 202 is tilted forward, for example, by about 10 degrees.

The height of the groove 234 is lowered by a length C compared to that described above. However, the height of the bonnet 234 could not be made sufficiently low.

Furthermore, as a water jacket device for a type engine, V
The cooling water outlet that communicates with the water jacket formed in the cylinder head of the cylinder head of the cylinder head of the cylinder head is located at a position away from the projection plane of the combustion chamber in the cylinder axis direction in the crankshaft direction of the cylinder head to the cylinder axis direction. There was something set up in

[Problem that the invention seeks to solve]

By the way, in the conventional cooling system for type ■ engines,
As shown in FIG. 4, the first and second cylinder hands 106-
1. The first and second water jackets communicate with the first and second water jackets 122-1 and 122-2 respectively formed on the
The cooling water discharge hole 1261.126-2 is connected to the first and second
It was disposed above the inner end portions 122a-1 and 122a-2 of the water jacket 122-1 and 122-2, and was connected by a connecting vibe 124. Furthermore, the surplus space S in the space 114 of the V-type engine 102 was not utilized effectively.

As a result, the connecting vibrator 124 is connected to the ■-type engine 102.
The throttle valve body 120, which is disposed in the upper part and above the connecting vibe 124, protrudes upward from the intake manifold 116, causing the V-type engine 1
This has the disadvantage that increasing the height of 02 interferes with lowering the height of the bonnet 134 and lowering the center of gravity of the vehicle 136, which is disadvantageous in practice.

In addition, the throttle valve body 120 protruding upward from the intake manifold 116 must be attached to an intake connecting pipe (not shown) at the bottom of the intake manifold 116, and the length of this intake connecting pipe (not shown) is This causes an increase in intake resistance, and the V-type engine 1
This has the disadvantage that it lowers the performance of 02 and is disadvantageous in practice.

[Purpose of the invention]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide first and second water jackets on the first and second cylinder heads of a V-type engine, respectively, in order to eliminate the above-mentioned disadvantages. The first and second water jackets each communicate with the second water jacket and are connected in a straight line by a connecting vibrator.
By locating the cooling water outlet below the first and second water jackets, the height of the V-type engine is lowered, making it smaller and lighter, and also To realize a cooling device for a type engine which can improve the performance of a V type engine by reducing the size of the intake system.

[Means for solving problems]

In order to achieve this object, the present invention provides a V-type engine mounted horizontally and tilted forward in a vehicle.
First and second water jackets are provided in the first and second cylinder heads of the V-type engine, respectively, and a connecting vibe is provided on one side of the V-type engine to communicate with the first and second water jackets, respectively. The first connected in a straight line,
It is characterized in that the second cooling water outlet is located below the first and second water jackets.

[Effect]

By configuring as described above, the first,
The first and second cooling water discharge ports are located below the first and second water jackets provided in the second cylinder head, thereby reducing the height of the V-type engine.

〔Example〕

Embodiments of the present invention will be described in detail below based on the drawings.

1 to 3 show embodiments of this invention. In the figure, 2 is a type engine, 4 is a cylinder block, and 6 is a type engine.
8 is a cylinder head, and 8 is a cylinder head cover.

The V-type engine 2 has an oil pan 10 attached to the lower surface of the V-shaped cylinder cylinder 4, and first and second cylinder heads 6-1, 6-2, respectively, to the upper surface.
and first and second cylinder head covers 8-1, 8-2 are placed. A first cylinder head 6-1 and a first cylinder head cover 8-1 are arranged on one end side (the right side in FIG. 1) of the ■-type engine 2, and a second cylinder head 6-2 and a second cylinder head cover 8-1 are arranged on one end side (the right side in FIG. 1) of the A head cover 8-2 is arranged on the other end side of the V-type engine 2 (on the left side in FIG. 1). Said first and second cylinder head 6-1.6-2
By placing the 11th and 2nd cylinder banks 12-1.12-2 in a V-shape, a space 14 is formed between the first and second cylinder banks 12-1.12-2. It is formed.

In the space 14, an intake manifold 16, a surge tank 1B on the upstream side of the intake manifold 16, and a surge tank 1 are provided.
A throttle valve body 20 is disposed upstream of the intake valve 8 and connected by an intake connecting vibe 18a.

In addition, the first and second cylinder heads 6- of the ■type engine 2
1.6-2 is the first and second water jacket) 22-1
．． 22-2 is provided.

Further, on one side of the ■-type engine 2, the first
, the first and second cooling water discharge holes 261 and 26-2, which communicate with the second water jacket 22-1 and 22-2 and are connected in a straight line by the connecting vibrator 24, are connected to the first and second water jackets 22, respectively. -1.22-2 is located below.

In other words, the first and second water jackets 22-1.22
As shown in FIG. 1.
22-2, for example, the first and second water jackets 2
2-1. Respective inner end portions 22a-1, 22a of 22-2
-2 is provided in communication with the upper part of the first and second cooling water discharge ports 26-1 and 26-2.

Then, by effectively utilizing the surplus space S in the space 14 of the V-type engine 2, the first and second cooling water discharge ports 26
-1. Connect 26-2 with the connecting vibrator 24.

Next, the effect will be explained.

First and second cylinder heads 61.6- of V-type engine 2
2) 22-1
．． The first and second cooling water discharge ports 26-1 and 26-2 are located below the inner ends 22a-1 and 22a-2 of the engine 22-2, thereby lowering the height of the ■type engine 2. are doing.

As a result, the height of the ■ type engine 2 can be lowered, and this ■ type engine 2 can be lowered.
The V-type engine 2 can be made small and lightweight.
When mounted on a chassis (not shown), the height of the bonnet (not shown) can be lowered, which is advantageous in practice and contributes to weight reduction.

Also, by effectively utilizing the surplus space S in the space 14 of the ■-type engine 2, the first and second cooling water discharge ports 26-1.
By connecting 26-2 with the connecting vibrator 24, the intake connecting vibrator 18a can be shortened, the weight of the intake system can be reduced, and the performance of the ■type engine 2 can be improved by reducing the intake resistance, which is advantageous in practice. be.

Furthermore, by effectively utilizing the surplus space S, the throttle valve body 20 can be placed at a lower position than in the past, and the resonance of the throttle valve body 20 can be reduced, and the various valves and valves attached to the throttle valve body 20 can be The durability of the sensor (not shown) can be improved.

〔Effect of the invention〕

As explained in detail above, according to the present invention, the first and second water jackets are respectively provided in the first and second cylinder heads of the V-type engine, and the first and second water jackets are provided on one side of the V-type engine. The first and second cooling water outlets, which communicate with the jackets and are connected in a straight line by a connecting vibrator, are located below the first and second water jackets, allowing the height of the ■-type engine to be lowered. This makes it possible to easily reduce the size and weight of the V-type engine, shorten the length of the intake system, and improve the performance of the V-type engine, which is advantageous in practice.

[Brief explanation of drawings]

Figures 1 to 3 show embodiments of the present invention. Figure 1 is a partially cutaway rear view of a V-type engine, Figure 2 is an enlarged view of the main parts of a cooling system for a V-type engine, and Figure 3 is a FIG. 2 is a partially cutaway sectional view of the type engine. 4 to 6 show the conventional technology of this invention, and FIG.
A partially cutaway rear view of the type engine, FIG. 5 is an explanatory diagram when the ■-type engine is installed, and FIG. 6 is an explanatory diagram when the V-type engine is installed. In the figure, 2 is a type engine, 4 is a cylinder block, 6 is a cylinder head, and 8 is a Radkahar 10 cylinder.
is the oil pan, 12 is the cylinder bank, 14 is the space,
16 is the intake manifold, 18 is the surge tank, 2
0 is a throttle valve body, 22 is a water jacket, 24 is a connecting vibe, and 26 is a cooling water outlet. Patent applicant: Suzuki Motor Co., Ltd.
Patent Attorney Yoshimi Saigo 3 Figure Figure Figure Procedure (Method) April 16, 1990 1, Indication of Case Patent Application No. 2-058951 2, Name of Invention V-type Engine Cooling device 3, relationship to the amendment case Patent applicant address 300 Takatsuka, Kami Village, Hamana District, Shizuoka Prefecture Name (2
0B) Kingomoto Automobile Industry Co., Ltd.

Claims (1)

[Claims] 1. In a V-type engine mounted horizontally and tilted forward in a vehicle, first and second water jackets are provided on the first and second cylinder heads of the V-type engine, respectively, and one side of the V-type engine is provided with first and second water jackets, respectively. The first and second cooling water outlets communicate with the first and second water jackets and are connected in a straight line by a connecting pipe to the first and second water jackets.
A cooling device for a V-type engine, characterized in that it is located below a water jacket.