JP2003328755A - Air bleeding device for cooling water of car engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air bleeding device for a cooling water of a car engine of such a structure that its air bleeding valve is installed in a position not surrounded by a car body member over the engine or a cylinder head cover inclined capable of facilitating air exhaust from a cooling circuit, enhancing the air bleeding performance, enhancing the easiness in handling the air bleeding valve, and enhancing the effectiveness of the air bleeding operation. <P>SOLUTION: The air bleeding device for the engine cooling water is structured so that one end of its air bleeding passage pipe is connected with the engine side top part of a cooling water communication passage constituent and the air bleeding valve having an air bleeding mechanism is installed at the other end of the air bleeding passage pipe, and the air bleeding valve is installed in a position higher than the engine side top part of the cooling water communication passage constituent and on the oversurface of the cylinder head cover. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling water bleeder for an automobile engine, and more particularly to an automobile engine for inclining a cylinder axis to facilitate air discharge from a cooling circuit of the engine mounted on the vehicle. The present invention relates to a cooling air bleeder.

[0002]

2. Description of the Related Art A vehicle is equipped with a cooling device for cooling each part of an engine with cooling water to maintain an appropriate temperature. This cooling device forcibly circulates the cooling water through a water pump, which is the cooling circuit of the engine, cools the hot cooling water with a radiator, and circulates the cooling water cooled with this radiator to the engine. is doing.

In the case of a truck-type commercial vehicle, a layout in which an engine is mounted below the driver's seat with a cylinder axis inclined is often adopted for vehicles.

That is, as shown in FIGS. 6 and 7, in a truck-type commercial vehicle, a vehicle body member 104 is horizontally arranged as a vehicle body member 102, and a right side seal member is provided at a right end portion of the vehicle body member 104. The driver's seat side panel 108 is connected in the horizontal direction via 106, and the passenger seat side panel 112 is directed in the horizontal direction via the left side seal member 110 to the left end of the vehicle body member 104 and is opened and closed. The rear vehicle body 114 is connected to the rear end portion of the vehicle body member 104 while being oriented in the horizontal direction, and the vehicle body floor 116 is connected to the front end portion of the vehicle body member 104. A driver's seat 118 is arranged above the driver's seat side panel 108.

Below the vehicle body member 102, the engine 120 is mounted with the cylinder axis 120C inclined to the left of the vehicle. This engine 120 has a cylinder block 1
22, cylinder head 124, and cylinder head cover 1
And 26.

The engine 120 includes a cooling device 128.
Is provided. The cooling device 128 includes a water pump 130 provided at a lower portion of the front surface of the cylinder block 122, a cooling water communication passage structure (thermo mechanism) 132 provided at an upper portion of the cylinder head 124, and an engine 12.
0 and a radiator 134 arranged in front of the vehicle body in front of 0, and the cooling water communication passage structure 132 and the radiator 1 are provided.
34 is connected to the upper tank 134U of the cooling circuit 136 by an outlet pipe 138 which is a part of the cooling circuit 136. Further, the lower tank 134D of the radiator 134 and the water pump 13 are connected.
0 is an inlet pipe 1 which is a part of the cooling circuit 136.
They are connected at 40. Upper tank 1 of radiator 134
A radiator cap 142 is attached to 34U. The water pump 130 forcibly supplies cooling water to the block side water jacket 144B formed on the cylinder block 122 and the head side water jacket 144H side formed on the cylinder head 124 as the cooling circuit 144 on the engine 120 side. is there. The radiator 134 cools the high-temperature cooling water flowing from the outlet pipe 138 through the upper tank 134U, and at the same time, the cooled cooling water flows out from the lower tank 134D to the inlet pipe 140 side.

In this vehicle, as shown in FIG. 6, the vehicle body floor 116 is recessed downward between the engine 120 and the radiator 134 to form a recess 116A.
The lowest portion of the recess 116A is the cylinder head 124.
Is arranged below the upper tank 134U of the cooling water communication passage structure 132 and the radiator 134 attached to the upper part of the engine 120, and reaches near the lower part of the engine 120.

As shown in FIG. 7, the cooling water communication passage structure 1
Reference numeral 32 constitutes a thermo mechanism, and the thermostat case 1
46 and the thermocap 148 are integrally formed, and depending on the temperature state of the engine 120, the engine 120
Head side water jacket 14 of the side cooling circuit 144
The amount of cooling water from 4H to the radiator 134 side is adjusted. In this cooling water communication passage structure 132,
The thermostat case 146 has a built-in thermostat (not shown), a cooling water communication passage 150, and a case mounting portion 1 on the inclined upper surface of the cylinder head 124.
It is attached to 52 and is arranged immediately below the vehicle body member 104. The thermocap 148 is fixed to the upper portion of the thermostat case 146, has a pressure cap 154 on the upper part, and is provided with a reserve tank side connection pipe 156 via the pressure cap 154.
Further, a radiator side connection pipe 158 is provided. An overflow pipe (not shown) that connects to a reserve tank (not shown) near the radiator 134 is connected to the reserve tank side connection pipe 156. An outlet pipe 138 connected to the radiator 134 is connected to the radiator side connection pipe 158. Further, the thermocap 148 is provided with an air vent passage 162 that is directed from the inside to the left and communicates with the outside as the air vent mechanism 160. An air bleed bolt 164 that can be loosened is attached. The air bleeding bolt 164 is provided on the left side of the vehicle so that
26 and the passenger side panel 112 are operated by a tool (not shown) from the work space S.

The radiator-side connecting pipe 158 of the thermocap 148 and the upper tank 134U of the radiator 134.
The upper connection pipe 166 of the outlet pipe 13
8 are connected. In this case, since the recess 116A is present in the recess of the vehicle body floor 116, a U-shaped bent portion 138A is formed in the outlet pipe 138. Lower connection pipe 168 of lower tank 134D of radiator 134 and cooling water inlet portion 1 of water pump 130
70 is connected by an inlet pipe 140.
The inlet pipe 140 is formed in a substantially straight line in the horizontal direction.

An example of such an engine cooling water air bleeding device is disclosed in Japanese Patent Laid-Open No. 2000-199430.
Japanese Patent Laid-Open No. 2000-73765, Japanese Utility Model Publication No. 1-
It is disclosed in Japanese Patent No. 160119. JP 2000-
In the cooling water bleeding device for an engine mounted on a vehicle with a cylinder axis inclined, an air bleeding valve is provided in a thermostat provided at the engine side cooling water highest position of the engine and the air bleeding valve is disclosed in Japanese Patent Laid-Open No. 199430. A valve is provided to connect to the overflow pipe by the engine side overflow pipe, and the air remaining in the thermostat is guided to the reserve tank. JP 200
In the cooling water bleeder for an engine mounted on a vehicle with a cylinder axis inclined, a flexible hose is directly or indirectly communicated with a water jacket of the engine. It is installed in a state where the hose is erected during air bleeding work. Japanese Utility Model Laid-Open No. 1-160119 discloses an engine cooling water air bleeding device in which a joint block is fixedly provided on the upper surface of a cylinder head, and an air bleeding member is provided on the top of this joint block. .

[0011]

By the way, conventionally, as shown in FIGS. 6 and 7, a radiator 13 provided at a front portion of a vehicle body.
4 and the engine 120 below the driver's seat 118, an outlet pipe 138 that is part of a cooling circuit 136.
However, in the layout in which the concave portion 116A of the vehicle body floor 116 is bent downward, when the cooling water is injected from the radiator cap 142, the bending portion 138A of the outlet pipe 138 causes the cooling circuit 1 on the engine 120 side.
The air of 44 does not escape to the radiator 134 side, so that an air pool occurs in the cooling circuit 144 on the engine 120 side. Therefore, it is necessary to set the air bleeding mechanism also on the engine 120 side. The air bleeding mechanism provided on the engine 120 side is used for the cooling circuit 14 on the engine 120 side.
It must be installed at the highest point in 4.

Therefore, conventionally, an air bleeding mechanism 160 is provided at the highest portion of the thermocap 148, and the air bleeding passage 16 is provided.
By loosening the air bleeding bolt 164 blocking 2
Air was being discharged together with the cooling water. As described above, when the air bleeding mechanism 160 is provided on the thermocap 148, the position of the air bleeding mechanism 160 is set to the thermocap 14
8, the tool for loosening the air bleed bolt 164 must be installed at the highest position on the engine 120 side, and the cylinder head cover 1 which is another component.
26 must be taken into consideration so that the air bleeding work can be performed smoothly without interfering with the vehicle body member 102 and the vehicle body member 102.

However, since the thermocap 148 is conventionally provided with the air bleeding mechanism 160, the air bleeding mechanism 160 is provided.
The cylinder head cover 126 and the upper part of the vehicle body member 102.
However, there is a disadvantage that the operability of the air bleeding bolt 164 of the air bleeding mechanism 160 is deteriorated because the air bleeding mechanism 164 is placed in the space surrounded by. In other words, since the air bleeding mechanism 160 is directly attached to the engine-side highest part by the thermocap 148 of the cooling water communication passageway structure 132, the position of the air bleeding mechanism 160 is set to the position of the cooling water communication passageway structure 132. Restricted, cylinder head cover 126 and engine 12
It is arranged in a space surrounded by the vehicle body member 102 on the upper part of 0, and the operability of the air bleeding mechanism 160 is deteriorated, and the air bleeding work is deteriorated.

[0014]

Therefore, in order to eliminate the above-mentioned inconvenience, the present invention provides an engine mounted on a vehicle with a cylinder axis inclined, and mounted on the upper part of the engine and in the vicinity of the engine. In a cooling water bleeding device for an automobile engine provided with a cooling water communication passage structure having an engine side highest part, one end side of an air bleed passage pipe is connected to the engine side highest part of the cooling water communication passage structure. The air vent valve of the air vent mechanism is provided on the other end side of the air vent passage pipe, and the air vent valve is provided at a position higher than the highest part of the cooling water communication passage structure on the engine side of the cylinder head cover. It is characterized by being attached to the upper surface.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, one end of an air bleed passage pipe is connected to the highest part of the cooling water communication passage structure on the engine side, and an air bleed mechanism is provided at the other end of the air bleed passage pipe. Since an air bleeding valve is installed on the top surface of the cylinder head cover at a position higher than the highest engine side part of the cooling water communication passage structure, it is easy to discharge air from the cooling circuit. In addition to improving the air bleeding performance, the air bleeding valve is placed at a position where it is not surrounded by the leaning cylinder head cover of the engine or the vehicle body member above the engine, improving the operability of the air bleeding valve and improving the air bleeding workability. Can be improved.

[0016]

Embodiments of the present invention will be described in detail and specifically with reference to the drawings. 1 to 3 show a first embodiment of the present invention.
An example is shown. 1 and 2, 2 is a vehicle body member that is a vehicle body member that is oriented in the front-rear direction of a vehicle (not shown) such as a commercial vehicle, 4 is an engine front frame that is oriented in the left-right direction of the vehicle, and 6 is the left-right direction of the vehicle Is a rear frame of the engine, 8 is an engine room opening (upper passenger seat), 10 is an engine, A is a crank axis line, V is a vertical line, and H is a horizontal line. The engine 10 is for three cylinders, includes a cylinder block 12, a cylinder head 14, and a cylinder head cover 16, and is mounted below the vehicle body member 2. In addition, in the engine 10, a crank axis A of a crank shaft (not shown) is oriented in the front-rear direction of the vehicle and is inclined rearward, and a cylinder axis 10C is rotated around the crank axis A with respect to a vertical line V. It is mounted with a tilt to the left of the vehicle. A chain cover 20 having an oil cap 18 is attached to the front side of the engine 10. A transmission (not shown) is connected to the rear surface of the cylinder block 12.

On the inclined upper surface side of the cylinder head 14,
Sequentially in the front-back direction, the first to third intake ports 22-1 to 22
-3 is formed, and the first to third intake side manifold mounting surfaces 24-1 to 24-3 are formed around the first to third intake ports 22-1 to 22-3.

A PCV valve 26 is attached to the front surface of the cylinder head cover 16. A PCV hose 28 is connected to the PCV valve 26. Also,
A blow-by gas hose connection pipe 30 is provided on the rear surface of the cylinder head cover 16. A blow-by gas hose 32 is connected to the blow-by gas hose connection pipe 30.

On the upper surface of the cylinder head cover 16,
First to third spark plug mounting portions 34-1 to 34-3 for mounting respective spark plugs (not shown) corresponding to the respective cylinders are provided. Further, the cylinder head cover 16 includes
A spark plug cover 36 that covers the first to third spark plug mounting portions 34-1 to 34-3 from above is provided by a plurality of cover mounting bolts 38.

On the rear surface of the cylinder head 14, a cooling water communication passage structure 42 is provided as a thermo mechanism of the cooling device 40.
Is attached. This cooling water communication passage structure 42 is
A thermostat case 44 having a built-in thermostat (not shown) and a thermocap (union) 46 are integrally formed. The thermostat case 44 is fixedly attached to the rear surface portion of the cylinder head 14 by fixing means (not shown) such as bolts. The thermocap 46 is arranged to be connected to the thermostat case 44 and directed obliquely upward and to the right with respect to the thermostat case 44, so that the cooling water is connected in the vicinity of the engine 10 so that the air in the cooling circuit 48 can be easily discharged. It is arranged as the highest part of the passage structure 42 on the engine side.

A pressure cap 50 is attached to the uppermost part of the thermocap 46, and an overflow which communicates with a reserve tank (not shown) near the radiator (not shown) through the pressure cap 50 is provided. Reserve tank side connection pipe 5 for pipe (not shown)
2 is provided to the right, a radiator-side connection pipe 54 that communicates with the radiator is provided to the right, and an air bleed-side connection pipe 56 is provided to the upper left. ing.

An air bleeding mechanism 58 is connected to the thermocap 46. The air bleeding mechanism 58 is
One end of an air bleed hose 60, which is an air bleed passage tube, is connected to the air bleed side connection pipe 56 of the thermocap 46. The air bleed hose 60 is directed obliquely upward along the rear surface of the engine 10 and the cylinder head cover 16
Along the uppermost portion of the inclined upper surface of the engine 10 through the substantially central portion of the rear end portion, and the other end side of the air bleeding hose 60 is arranged in the middle portion of the cylinder head cover 16. On the other end side of this air bleeding hose 60,
An air vent valve 62 of the air vent mechanism 58 is provided.

The air bleeding valve 62 includes a valve body 6
4 and an air vent bolt 66 attached to the valve body 64. The valve body 64 is formed, for example, in a substantially rectangular parallelepiped shape, has a hose connection pipe 68 on the front surface, and has an air vent hole 70 formed therein. The air vent hole 70 has one end communicating with the hose connecting pipe 68 and the other end opening to the upper surface at an opening 70A.
have. The upper surface of the valve body 64 has an air vent bolt 66 for opening and closing the opening 70A of the air vent hole 70.
Is attached. When the cooling water is injected into the radiator, the air bleeding bolt 66 is operated by a tool (not shown) from diagonally above the left side of the engine 10 to discharge the air and the cooling water of the cooling circuit 48 from the opening 70A. It is a thing. Therefore, the air bleeding bolt 66 is arranged at a position not surrounded by the cylinder head cover 16 and the vehicle body member 2, and the air bleeding bolt 66 is operated by a tool obliquely from the upper left of the engine 10.

The valve body 64 is held by the valve mounting bracket 72. As shown in FIG. 3, the valve mounting bracket 72 is, for example, formed in a substantially rectangular shape, has a main body fixing portion 74 for fixing the bottom surface of the valve main body 64 at one end side, a positioning portion 76 at the other end side, and this main body. The fixing portion 74 and the positioning portion 76 are connected to each other, and the cover-side mounting portion 80 is formed to have a concave cross-section and a predetermined thickness for reinforcement by the one-side and the other-side step portions 78-1 and 78-2. have. The cover-side mounting portion 80 is formed with a bolt hole 84 through which the fixing bolt 82 mounted on the cylinder head cover 16 is inserted. The valve mounting bracket 72 can be easily changed in shape, satisfies the condition that the air bleeding valve 62 is located at the highest position in the cooling circuit 48, and the tool for bleeding air interferes with other parts. Other shapes may be used so that the air bleeding operation is most easily performed.
Similarly, the air bleeding hose 60 can be easily changed in shape.

Therefore, as shown in FIG. 1, the air bleeding hose 60 has one end side (point P) connected to the air bleeding side connecting pipe 56 above the thermocap 46, and
After passing through the rear of the engine 10, the other end side (point Q) is connected to the hose connection pipe 68 of the air bleeding valve 62 on the upper surface of the cylinder head cover 16 with a tightening band 86, and the one end side (point P) to the other end side. It is arranged with a height difference (R) in the vertical direction to the (Q point) and is inclined so as to facilitate the discharge of air from the cooling circuit 48. Air bleeding valve 6
2 is an upper surface portion of the cylinder head cover 16 and is attached to a position higher than the spark plug. The air bleeding valve 62 is connected to the thermocap 46 via the air bleeding hose 60, and the mounting bracket 72
It is attached to the upper surface of the cylinder head cover 16 via. The air bleeding bolt 66 is loosened to discharge the cooling water together with the air in the cooling circuit 48 from the air bleeding hole 70.

A hose fixture 88, which is a passage pipe fixture for fixing the air bleeding hose 60, is attached to the rear end of the ignition plug cover 36. This hose fixture 88
Is for restricting the air bleeding hose 60 to a predetermined inclined state.

Next, the operation of the first embodiment will be described.

In the cooling device 40, when the engine 10 is driven, the cooling water is forced by the water pump (not shown) to the block side water jacket and the head side water jacket (not shown) which are the cooling circuit 46 of the engine 10. The circulated, high-temperature cooling water is sent from an outlet pipe (not shown) to a radiator (not shown) through a cooling water communication passage structure 42, is cooled by the radiator, and is cooled by the radiator. Is circulated from the inlet pipe (not shown) to the engine 10 via the water pump.

On the other hand, when the cooling water is injected into the radiator when the engine 10 is not driven, the air bleeding bolt 66 of the air bleeding mechanism 58 is attached to the upper left of the engine 10 which is not surrounded by the cylinder head cover 16 or the vehicle body member 2. The air and the cooling water in the cooling circuit 48 are discharged to the outside by loosening with a tool from.

Therefore, in the first embodiment, one end side of the air bleed hose 60 is connected to the upper portion of the thermocap 46, which is the highest engine side portion of the cooling water communication passageway structure 42, and this air bleeding is provided. An air bleeding valve 62 is provided on the other end side of the hose 60, and the air bleeding valve 62 is attached to the upper surface of the cylinder head cover 16 at a position higher than the engine side highest part of the cooling water communication passage structure 42. The air is easily discharged from the cooling circuit 48, the air bleeding performance is improved, and the air bleeding valve 62 is
The air vent valve 62 is provided at a position not surrounded by the cylinder head cover 16 of the inclined engine 10 and the vehicle body member 2 which is a vehicle body member disposed above the engine 10.
It is possible to improve the operability and improve the air bleeding workability. That is, the air vent hose 60 is attached to the upper portion of the thermocap 46, and the air vent valve 62 is attached to the cylinder head cover 16 by the mounting bracket 72.
Since it is attached to the upper surface of the
The position of can be freely set, and the operability of the air bleeding bolt 66 of the air bleeding valve 62 in the inclined engine 10 can be improved. Further, the cylinder head cover 1 is so arranged that the air bleeding valve 62 is located higher than the thermocap 46, which is the highest portion on the engine side.
Since it is attached to the upper surface of 6, the air bleeding hose 60 has an inclination, which facilitates the discharge of air.

The cylinder head cover 16 is provided with a spark plug mounting portion 34 for mounting a spark plug, and the air bleeding valve 62 is disposed at a higher position than the spark plug mounting portion 34, so that the cylinder head cover 16 is provided.
Even when the spark plug mounting portion 34 is provided in the ignition plug, the spark plug can be easily inspected while improving the air bleeding performance, and the air bleeding valve 62 is set to the highest position of the cylinder head cover 16. The air bleeding hose 60 can be provided with a large inclination and the air can be more easily discharged.

Further, the cylinder head cover 16 has a spark plug cover 36 which covers the spark plug mounting portion 34 from above.
By providing the spark plug cover 36 with the hose fixing tool 88 for fixing the air bleeding hose 60,
With this hose fixture 88, the inclination of the air bleeding hose 60 is removed from the cooling water communication passage forming body 42 by the air bleeding valve 6
It can be regulated so as to be inclined in a predetermined direction toward 2, and the air bleeding performance can be improved.

FIG. 4 shows a special configuration of the present invention, which is the second
An example is shown.

In the following embodiments, the parts having the same functions as those of the above-mentioned first embodiment are designated by the same reference numerals.

The features of the second embodiment are as follows. That is, in the air bleeding mechanism 58, the air bleeding valve 62 is fixedly provided on the ignition plug cover 36 at the front end portion 36A of the highest portion.

According to the structure of the second embodiment, the air bleeding valve 62 is provided at the highest position front end portion 36A on the spark plug cover 36, so that the air bleeding valve 62 can be easily discharged. It is possible to reduce the number of parts, simplify the structure, and reduce the cost, because a separate member is not required.

FIG. 5 shows a special configuration of the present invention,
An example is shown.

The features of the third embodiment are as follows. That is, in the cooling water communication passage structure 42, the thermostat case 44 has a thermocap 46.
Is integrally formed so as to be positioned behind and immediately above the engine 10, and a bolt mounting portion 92 is formed on the thermocap 46 so as to be directed diagonally upward to the left, and
An air bleeding bolt 66 operated by a tool from diagonally above the left side of the vehicle is attached to the bolt mounting portion 92.

According to the configuration of the third embodiment, the thermocap 46 of the cooling water communication passage forming body 42 is used for the engine 10.
Since it is placed rearward of the vehicle, the air bleeding bolt 66 can be easily operated with a tool from the diagonally upper left of the vehicle, improving the air bleeding operability and eliminating the need for parts such as an air bleeding hose. Thus, the number of parts can be reduced, the structure can be simplified, and the cost can be reduced.

[0040]

As is apparent from the above detailed description, according to the present invention, one end side of the air bleed passage pipe is connected to the engine side highest portion of the cooling water communication passage structure, and the air bleed passage pipe is provided. An air bleeding valve of an air bleeding mechanism is provided on the other end of the cylinder, and this air bleeding valve is mounted on the upper surface of the cylinder head cover at a position higher than the engine-side highest part of the cooling water communication passage structure, thereby cooling The air bleeding performance is improved by facilitating the air bleeding of the circuit, and the air bleeding valve is placed in a position where it is not surrounded by the tilted engine cylinder head cover or the vehicle body member above the engine to improve the operability of the air bleeding valve. The air bleeding workability can be improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view from the rear of an engine in a first embodiment.

2 is a plan view of the engine according to the arrow II in FIG. 1. FIG.

FIG. 3 is an enlarged perspective view of an air bleeding mechanism in the first embodiment.

FIG. 4 is a plan view of the engine in the second embodiment.

FIG. 5 is a schematic perspective view from the rear of the engine in the third embodiment.

FIG. 6 is a schematic side view around the engine of a conventional vehicle.

7 is an enlarged front view around the engine of the vehicle along arrow VII in FIG.

[Explanation of symbols]

2 body members 10 engine 14 cylinder head 16 cylinder head cover 34 Spark plug mounting part 40 cooling device 42 Cooling water communication passage structure 44 thermostat case 46 Thermo Cap 58 Air bleeding mechanism 60 Air bleeding hose 62 Air bleeding valve 72 Valve mounting bracket 88 Hose Fixture

Claims (3)

[Claims] 1. An engine for an automobile provided with an engine mounted on a vehicle with a cylinder axis inclined, and provided with a cooling water communication passage structure which is attached to an upper portion of the engine and has a maximum engine side portion in the vicinity of the engine. In the cooling water air bleeding device, one end side of the air bleeding passage pipe is connected to the engine side highest portion of the cooling water communication passage structure, and the other end side of the air bleeding passage pipe is provided with an air bleeding mechanism. An air bleeding valve is provided, and the air bleeding valve is attached to the upper surface of the cylinder head cover at a position higher than the engine-side highest part of the cooling water communication passage structure, and the cooling water air bleeding of the automobile engine is characterized. apparatus. 2. A spark plug mounting portion for mounting a spark plug is provided on an upper surface of the cylinder head cover, and the air bleeding valve is arranged at a higher position than the spark plug mounting portion. The cooling water deaeration device for an automobile engine according to 1. 3. A spark plug cover for covering the spark plug mounting portion from above is provided on the cylinder head cover,
The cooling water bleeder for an automobile engine according to claim 1 or 2, wherein the spark plug cover is provided with a passage pipe fixing member for fixing the air bleed passage pipe.