TW554133B - Engine having a cooling water port cover - Google Patents

Abstract

A cooling water inlet/outlet cover affixed to a side surface of a cylinder head 2 of an engine E includes a first cover portion C1 and a second cover portion C2. The first cover portion C1 defines an inflow path 20 for introducing cooling water from a radiator 25 to an inlet 42 communicating with a thermostat-type path opening/closing mechanism 15. The second cover portion C2 defines an outflow path 21 for guiding cooling water from the outlet 49 to a radiator 25 and an outflow path 22 partitioned from the outflow path 21 by the partition wall 68 to guide cooling water from the outlet 52 to a heater core 29 and a throttle body 7. The cooling water inlet/outlet cover C further includes a reservoir portion 71 for holding an extruded part of a liquid packing 54 to be coated around the outlets 49, 52 to prevent the extruded part of the liquid packing 54 from spoiling an elastic material packing 46. This configuration contributes to facilitating connection of hoses to the cooling water inlet and outlets formed in the engine body, thereby facilitating assembly of the engine, and further reducing the number of parts.

Description

554133 A7 B7 V. Description of the invention (i) The present invention relates to an internal combustion engine having a cooling water inlet / outlet cover connected to an internal combustion engine body, which includes an inflow path for guiding cooling water from a radiator into the cooling water inlet of the internal combustion engine body It is used to connect a thermostat and an outlet path for guiding the cooling water from the outlet of the engine block to the radiator. When one of the internal combustion engines has this type of cooling water inlet / outlet cover, it will be known that the internal combustion engine has a thermostat cover, which is disclosed in Japanese Patent Application Publication No. 2000-282861. In this internal combustion engine, the thermostat cover fixed on the side surface of the cylinder head covers the outlet of the cooling water path of the cylinder head, and the thermostat path opening / closing mechanism accommodated in the regulating chamber defined by the cylinder head, Used to allow cooling water to return to the radiator. The thermostat cover defines a cooling water inlet opening connected to a radiator hose for guiding cooling water from the radiator, and a cooling water outlet opening connected to the radiator hose for guiding cooling water. Go back to the heat sink. In addition, a cooling water hose is connected to the other surface of the cylinder head to supply a water jacket from the cylinder head to the air conditioning heater core. In the prior art, 'the thermostat cover integrally defines both the cooling water outlet opening and the cooling water inlet opening, and is therefore believed to effectively reduce components and assembly steps. However, because the cooling hose connected to the heater core is connected to the side surface of the cylinder head, and is not used to install on the side surface of the thermostat cover, it causes the cooling water outlet to be positioned at a separate position of the cylinder head, and As a result, the hose connection operation is inefficient. This prior art therefore has room for improvement from the viewpoint of internal combustion engines. The separate position of the outlet prevents excessive reduction in the number of components and assembly steps. -4-

554133

Therefore, the main purpose of the present invention is injury. The 0 series makes it easy to connect the hose or its Sheffield element to the cooling water inlet and the multiple outlets in the taxi and internal combustion engine, thereby facilitating the assembly of the internal combustion engine. And further reduce components. Based on the viewpoint of facilitating the assembly of internal combustion engines, another object of the present invention is to seal materials outside of the material. When liquid is used as the gasket member between the internal combustion engine body and the strange temperature shield, the liquid is prevented from damaging the elastic material gasket. . In order to accomplish the main objective, the present invention provides an internal combustion engine which has a cooling water inlet / outlet cover and is provided on and attached to the side surface of the internal combustion engine body to cover the cooling water inlet and outlet of the internal combustion engine body. The cover includes a cover portion and a second cover portion, wherein the first cover portion covers the inlet and defines an inflow path, which is connected to an opening / closing mechanism of a thermostat type path for guiding the heat from the radiator Cooling water, and the second cover portion covers the outlet, and the characteristic is that the outlet includes a first outlet and a second outlet, and the second cover portion forms a first outflow path, and is guided from the first outlet The cooling water to the radiator, and a second outflow path are separated from the first outflow path through a partition plate and guide the cooling water from the second outlet to the heat exchanger. ... The structure of the present invention provides the following effects. In other words, because the components for connecting the hoses and other channel members connecting the inlet and outlet to the radiator and thermostat are 'made in a single member of the cooling water inlet / outlet cover, and they are made in the The position of one side surface of the internal combustion engine body makes it easy to connect the respective channel members to guide the cooling water, thereby improving the work and the internal combustion engine assembly (convenience. Furthermore, the structure of the present invention does not require the preparation of special components for the paper Dimensions are applicable to China National Standard (CNS) A4 specifications (210X297 public reply) 554133 A7 B7 V. Description of the invention (3 Supply cooling water to the demon torture, law "& _, if the father and son are like joints, it will reduce components Number and related :: such as the assembly steps of the joint, it is beneficial to the assembly of the internal combustion engine. 葳 The second outflow path may include a connection portion for guiding the cooling water from the second outlet to a section of fluid. Opposing along the internal combustion engine body The mounting surface and the cooling water inlet / outlet, the interface between the internal combustion engine body and the first and second cover parts can be sealed with an elastic material gasket, and the internal combustion engine The interface between the body and the other of the first and second cover parts can be sealed by liquid pressing. In addition, a part of the installation surface of the cooling water inlet / outlet cover is positioned on the elastic material gasket installation A region or a region opposite to the installation region, and a region where the liquid is applied tightly or a region where the coating region is opposite to the application region may include a blocking portion, and the blocking is from the region. The liquid in the coating area presses the protrusion into the mounting area. In this case, the following effects are provided. In other words, when the cooling water inlet / outlet cover is attached to the internal combustion engine body, the elastic material gasket is used to seal the cooling water inlet / outlet. The interface between the mask and the internal combustion engine, and when the liquid used for handling and cost is more favorable, a part of the liquid seal protrudes from the coating area and moves toward the elastic material washer to avoid reaching the elastic material washer. Therefore 'elasticity The material gasket is not damaged by the liquid pressing protrusion and prevents the sealing property from being lowered. The blocking portion may be a recessed portion such as a groove. The first cover And the second cover can be connected by connecting elements. The details of the present invention will be clearly understood from the following description and related drawings, wherein: FIG. 1 is a schematic perspective view of an internal combustion engine according to an embodiment of the present invention; 6-This standard applies to A4 size (297 mm)

Binding

k 554133 A7 B7 V. Description of the invention (4 Fig. 2 is a left side view showing the cooling of the internal combustion engine shown in Fig. 1; Fig. 3 is a left side view of the cylinder head of the internal combustion engine shown in Fig. 1; A horizontal cross-sectional view of a cooling water inlet / outlet cover approximately at the left end of the cylinder head; and FIG. 5 is a drawing taken along VV of FIG. 4. Referring to FIGS. 1 to 5, an embodiment of the present invention will be described as follows. Figure 1. The internal combustion engine E of the present invention is an original "overhead camshaft water-cooled four-valve four-cycle internal combustion engine of a vehicle. The internal combustion engine E includes a cylinder group having a four-steam &: 5 (see Figure 2) in-line configuration. 1. A cylinder head connected to the top of the cylinder group 1 2. A head cover 3 'connected to the top of the cylinder head 2 and an oil pan * connected to the bottom end of the cylinder group 1. The cylinder group 1, the cylinder head 2. The hood 3 and the oil pan 4 constitute the internal combustion engine block of the internal combustion engine. In the following description, the directions of 'front, rear, left, and right refer to the direction of the vehicle. On the front surface of the / ¾ red head 2, an inhalation is attached. End manifold 6. The suction end, the tube 6 includes a collection tube 6a just It is located above the head cover 3, and has a joint 7 at its left end, and four branch pipes 6b are branched from the collection pipe and connected to the front surface of the cylinder head 2. Each branch pipe ^ passes the head end: two Into: Connected to the combustion chamber 8 of each cylinder 5 (see Fig. 2). A discharge terminal s, not shown, is attached to the rear surface of the cylinder head 2. With reference to Fig. 2, the cooling system of the internal combustion engine E will be described next. Yizhiqi ... includes—cooling water system · 13, which has one (see figure n integrated at the front of its right end. It has two cooling * ... the head 2 accommodates a thermostat 1 in the left end adjustment chamber Η:

Binding

554133 A7 ___B7 V. Description of the invention (5) ′ One end is aligned with the cylinder 5 (in this example, it corresponds to the left and right directions). The cooling water jackets 11 and 12 are connected through a plurality of connection paths 16 in the cylinder head 2. A cooling water inlet / outlet cover C is attached to the left end surface of one side surface of the cylinder head 2 and has an inflow path 20 and two outflow paths 21 and 22. The regulating chamber 14 containing the strange temperature controller 15 is connected to the radiator 25 through the inflow path 2 () and the heat radiation hose 23. The path 26 of the cylinder head 2 is also connected to the radiator 25 via the outflow path 21 and the radiator hose 24. The cooling water jacket 12 is connected to the air-conditioning heater core 29 through the outflow path 22 and the hose 27 as a heat exchanger, and is connected to the cooling water path in the throttle body 7 through the outflow path 22 and the hose 30. The inlet 32 of the cylinder head 2 and the opening 33 of the pipe 38 are described later, and are connected to the cooling water path of the air-conditioning heater core 29 and the throttle body 7 through the hoses 28 and 31, respectively. The hoses 23, 24, 27, 28, 30 and 31 are cooling water channel elements. The cooling water released by the cooling water pump 1 3 flows through the release path 34 of the cylinder group, and enters the cooling water jacket 12 through the inlet 3 5 of the cylinder head 2. A conventional opening / closing mechanism of the thermostat type path 15 series structure is used to close the connection between the radiator hose 23 and the adjustment chamber 14 in the cold state of the internal combustion engine E. In the cold state of this internal combustion engine E, as shown by the dashed line in FIG. 2, almost no cooling water flows into the cooling water jacket 11 through the connecting path 16. Instead, the cooling water in the cooling water jacket 12 passes the bypass 3 6 in the cylinder head 2. Flow into the conditioning chamber 14. At the same time, part of the cooling water supply passes through the hose 27 to the heater core 29 for heat exchange of the warming layer air, and then flows back to the regulating chamber 141 through the hose 28 and the inlet 32. Another part of the cooling water in the cooling water jacket 12 is used for low-temperature transmission. -8- This paper size applies Chinese National Standard (CNS) A4 specification (210X 297 mm) 554133 A7 ------ B7 V. Description of the invention (6) In Canada, the hose 30 of the fluid 7 is supplied to the throttle body 7 and then flows into the pipeline 38 through the hose 3 j. Because the cooling water in the control room 4 is sucked through the cooling pump 3 through the pipe 38 connected to the outlet 37 of the cylinder head 2 and is opened to adjust to 14, the cooling water circulates in the cooling water jacket 2 and does not flow in Or through the cold radiator 25. In the hot state of the internal combustion engine E, the thermostat-type path opening / closing mechanism 15 functions to make the connection between the radiator hose 23 and the regulating chamber 14 and close the bypass 3 6 at the same time. Therefore, the cooling water in the cooling water jacket 2 does not flow into the regulating chamber 14 through the bypass 36. Instead, as shown by the solid line in FIG. 2, it flows into the cooling water jacket through the connected path 16 to cool the cylinder group 丨 and then passes through the path 39 of the cylinder group 1, the path 26 of the cylinder head 2, and the radiator hose 24. It enters the radiator 25 ′ and is cooled by heat radiation, and flows into the adjustment chamber 14 through the radiator hose 23, the inflow path 20, and the thermostat 15. In this procedure, it is the same as the cold state. Part of the cooling water in the cooling water jacket 12 is supplied to the heater core 29 through the hose 27, and the cooling water is returned to the regulating room 14 through the hose 28 after heat exchange. The cooling water supplied to the throttle body 7 is controlled by a control valve (not shown) to prevent the throttle body 7 from overheating. The cooling water in the regulating room 丨 4 is sucked by the cooling water pump 1 3 through the outlet 37 and the pipeline 38, and in the hot state, the cooling water flowing through the radiator 25 is in the water jackets n and 12. 1 and 3 to 5, the left end of the cylinder head 2 and the cooling water inlet / outlet cover C will be further explained as follows. 3 and 4, a mounting surface 4 () for attaching a cooling water inlet / outlet cover c is formed on the left end surface of the cylinder head 2. As shown in FIG. The adjustment chamber 14 is made as a hollow at the left end of the cylinder head 2 -9-This paper size applies to China National Standard (CNS) A4 (210X 297 mm) 554133

=, And the axial extension of the camshaft is positioned at a lower position, and its ratio = open (Fig. 3) is close to the suction end of the steam rainbow protrusion 41 (the substantially circular inlet 42 of the Q 4 boundary 2 is opened to the mounting surface). 40. Along the entrance, the circumference Shao 'made a path to accommodate the thermostat type opening, closing the machine "ring grip ... to make the grip type section 43 and the thermostat type path between the cooling water port / outlet cover c open. The grip portion W of the closing mechanism 15. Therefore, the thermostat type path opening / closing mechanism 15 Qi steam red head 2 is aligned with the position of the inlet 42. Where the circumferential portion along the outer part of stage 43 is made into a ring-shaped stage than the stage 43 domain 44, so that the O-ring or other type of synthetic rubber or synthetic resin ring elastic material washer 46 is installed in the annular groove 45 made between the stage portion 44 and the outer circumference of the grip portion 15a. The groove 45 provides a mounting area 47 is provided with an elastic material washer 46 on the mounting surface 40. Through the partition surface 48, the positioning ratio adjustment chamber 14 is closer to the discharge end side (rear side) and the path 26 has an outlet 49 that opens to the mounting surface 40. The partition 48 forms a Bolt hole H2, which is open at the division The lower part of the surface 40a is used as one of the four bolt holes H1 to H4 for receiving four bolts B (see FIG. 1) to fix the cooling water inlet / outlet cover C to the cylinder head 2. Reference No. 50 Note A connecting hole for releasing the air remaining in the cooling water jacket 12. In the mounting surface 40, the outlet 52 of the cooling water jacket 12 is opened closer to the discharge end side than the outlet 49. The outlet 52 and the outlet 49 are positioned at the cooling water jacket 12. Opposite side of the distinguishing surface 40b (partial mounting surface 40) of the distinguishing wall 51 extending between the outlet 49 and the outlet 49. It further forms a mounting hole 53 for installing a water temperature sensor, which detects the temperature of the cooling water at the outlet 52, And it is open from the rear surface of the cylinder head 2 to the outlet 52. -10- 554133 A7 —----——___ B7 5. Description of the invention (S) is still on the mounting surface 40, which provides a non-circular, annular coating area 55 surrounds the exit 49, 52, which includes the right to distinguish the surface, and on it is tied, for example, a piece of FIPG seal material with the material to follow the liquid (as shown in the figure). Therefore, the F eight fake products "y The IS knife surface 40a is positioned between the mounting area 47 and the coating area 55. Part of the mounting surface 40. On the other side, refer to Figures 4 and 5, attached to the mounting surface 40, but the water inlet / outlet π | c is made by casting as an integral component of Ming alloy, which includes A first cover _ the first cover section forming adjustment room 6 is used to accommodate part of the thermostat type path opening / closing mechanism 15 and covers the strange thermostat type path opening / closing mechanism 15 and the entrance 42, and A second cover portion 0 'This second cover portion covers two outlets 49, 52. The cooling water inlet / outlet cover. It also has four insertion holes Η5 to Η8 for receiving four bolts B and fixing the cooling water inlet / Exit cover C to the cylinder head 2. The first cover portion ci forms a connecting portion 62 for connecting the heat dissipation hose 23, and the inflow path 20 is connected to the radiator hose 23 to introduce and guide the cooling water cooled by the radiator 25 to the regulating chamber 61, further To the inlet 42 and a mounting hole 64 for receiving a temperature switch 63 (see FIG. Υ), which detects the cooling water from the radiator 25 to control the operation of the radiator fan to reflect the temperature of the cooling water. The second cover portion C2 A connecting portion 65 is formed to be connected to the first cover portion C1 for connecting the radiator hose 24 (see FIG. 2), and a connecting portion 66 is located closer to the discharge end side than the connecting portion 65 for connecting the hose 27 ( (See FIG. 2), and a connecting portion 67 for connecting the hose 30 (see FIG. 2). Furthermore, the second cover portion C2 forms a first-pass exit 21 having an inlet 21a substantially aligned with the outlet 52 and connected to a radiator Hose 24 (see Figure 2) to direct cooling water from outlet -11-

554133 A7 B7 V. Description of the invention (9 49 flows out to the radiator 25, and the first exit path 22 has an inlet 22 & which is roughly aligned with the outlet 52 and connected with the hoses 27 and 30 to guide the cooling water from the outlet 52 Outflow to heater core 29 and throttle body 7. The outflow path 21 and outflow path 22 are distinguished by the partition 68. ~ Jc person α / out π f G has-installation table @ 6Q 'for overlapping cylinder head The mounting surface 2 and the mounting surface 60 include a mounting-area-opposing area 69 (FIG. 5), which is a region of a pair of standing grooves 45. In other words, the mounting area 47 includes a contact area for contacting an elastic material washer 牝. When the cooling water inlet / outlet I c is connected to the cylinder head 2 and along the circumference of the second outlet 61 of the adjustment chamber 61, it is opened to approximately align with the installation surface 60 of the inlet 42. The installation-area-opposing area 69 is a lap installation Area 叼. The mounting surface 60 further has a keying area / area_opposite surface 70, which is a pair of areas where the areas 55 are coated with each other. This coating area / opposite area 70 is positioned along the entrances 21a, 22a Open to the mounting surface 60 including the distinguishing surface The sub-surface is the installation surface 60 of the partial partition 68. At the position between the installation-area-opposite area 69 and the coating area / opposite area 70, the liquid in the form of a groove or other recessed part is urgent. 54 Container section 71 is formed on the partition surface 60a, which is a part of the mounting surface 60 opposite to the partition surface 40a. The container section 71 extends from above the insertion hole 116 to align the bolt hole H2 below the partition surface 60a And close to the top of the distinguishing surface 60a. When the cooling water population / outlet cover c is mounted and fixed to the mounting surface 40 of the cylinder head 2 with bolts B, the container portion 71 is gripped by a portion overflowing from the coating area 55 The liquid is forced and moved to the elastic material washer 以便 so as to prevent the washer 54 from invading the mounting area 47, thereby preventing the washer 54 from soiling the elastic material -12-

554133 A7 B7 V. Description of the invention (10) Material gasket 46 or entry groove 45. The shape of the groove of the container portion 71 can be determined by taking into consideration the range and number of protrusions of the liquid pressing 54 as appropriate. In this embodiment, considering the tightening force of the bolt B to press down the surrounding portion of the insertion hole H6 to abut the mounting surface 40 of the cylinder head 2 and to prevent the liquid from being forced 54 to move with a sufficient pressure, the container portion 7 1 The system is formed in an area that does not include the peripheral portion of the insertion hole H2. As shown in FIG. 1, the cooling water inlet / outlet cover C has a connecting element 72 connected to the first cover portion C1 and the second cover portion C2. The connecting member 72 reinforces the first and second cover portions C1 and C2 so as to form a protrusion in a cylindrical direction. Meanwhile, when the cooling water inlet / outlet cover C is cast, the connecting member 72 provides a smooth flow of molten metal into the die for molding the first cover portion C1 and the second cover portion C2. Next, operations and effects of the embodiment having the above structure will be described. On a portion of the first cover portion C1 of the cooling water inlet / outlet cover C including the first and second cover portions C1 and C2 as an integrated member, a heat dissipation hose 23 is connected to the connection portion 62 to form an inflow path 20 for The cooling water from the radiator 25 is guided to the inlet 42 'with a thermostat-type path opening / closing mechanism 15 positioned therebetween. On the second cover portion C2, the 'radiator hose 24 is connected to the connecting portion 65 to form an outflow path 21 for releasing cooling water from the outlet 49 to the radiator 25, and the outflow path 22 is separated by a partition 68. It is divided into and out of the path 21 to guide the cooling water from the outlet 52 to the heater core 29 and the throttle body 7 and together with the hoses 27 and 30 connected to the connection portions 66 and 67. Therefore, the connecting portions 62, 65, 66, 67 are connected to the hoses 23, 24, 27, 30 for connecting the inlet 42 and the outlet 21, 22 to the radiator 25, and the heater core 29 and the throttle body 7 are formed in a single member. Cooling water inlet / outlet cover [. At the same time, the connecting parts 62, 65, 66, 67 are concentrated on the left end surface of the cylinder head 2. -13- This paper size applies to the Chinese National Standard (CNS) A4 specification (210X 297 mm) 554133 A7 B7

. Finally, the hoses 23, 24, 27, and 30 for the cooling water to flow through will help improve the work efficiency and therefore improve the assembly of the internal combustion engine E. Moreover, unlike $, this embodiment does not need to prepare any additional components such as joints, which were previously required to supply cooling water to the heater core 29 and the throttling unit 7. Therefore, this embodiment reduces components, As a result, the number of assembly steps related to joints, etc. is reduced, and the assembly efficiency of the internal combustion engine E is improved from this viewpoint. For the sealing between the cooling water inlet / outlet cover C and the cylinder head 2, this embodiment uses a liquid tighter 54 which is easier to handle and less costly than an elastic material rim * 6, except for the elastic material rim * 6. However, when the cooling water inlet / outlet cover C is installed on the cylinder head 2, a part of the liquid pressing 54 protruding from the coating area 55 and moving toward the elastic material gasket 46 is held at the part of the cooling water inlet / outlet cover c. The container portion 71 formed in the mounting surface 60 is located at the installation area-the oblique area 69 opposite to the installation area 47 of the elastic material gasket 46 and the coating area-area opposite to the liquid pressing 54 coating area 55. Opposite areas 70. Therefore, this embodiment prevents the elastic material washer 46 from invading the mounting area 47, thereby preventing the liquid pressing 54 from contaminating the elastic material ring 46, and preventing the sealing effect of the elastic material washer 46 due to the tension of the liquid pressing 54. deterioration. Furthermore, because the two outflow paths 21, 22 are the paths of the cooling water flowing out of the cylinder head 2, the liquid urgency 54 is completely coated on the coating area 55 that surrounds the outflow paths 21, 22, excluding the distinguishing surface 40b, The cooling water is allowed to leak slightly between the paths along the mounting surfaces 40, 60. Therefore, the coating area 55 is narrower, the time required for coating is shorter, and the conductivity of the internal combustion engine E is improved. If the cooling water between paths 2 and 22 exceeds the allowable value, distinguish the surface_ -14- This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) 554133 A7 B7 V. Description of the invention (12) 4 Ob will also need a seal. However, in this case, since the liquid pressing 54 is used, it is also sufficient to apply the liquid pressing 54 to the discrimination surface 40b. Therefore, it is easy to change the design to restrict the leakage of the cooling water between the paths 22 and 22 to a permissible range without causing a cost-effective increase. Because this embodiment utilizes an elastic material washer 46 to seal the connection between the inlet 42 and the inflow path 20, and the connections between the outlets 49, 52 and the outflow path 21, 22 respectively, this embodiment can be implemented by using only the elastic material washer 46. The model reduces the cost of the internal combustion engine E, which requires the cost of an elastomeric gasket 46 and more accurate machining to ensure a better seal cost. Because the thermostat type path opening / closing mechanism 15 is provided, the elastic material gasket 46 may include a circular loop 42 with a circular inlet 42 and an outlet 61a. Therefore, its cost is lower than the non-circular, annular material ring used in the model, in which an elastic material washer is provided along the outlet 49, 52, and the cost of the internal combustion engine E is reduced. Because the molten metal passes through the die for connecting the element 72, the die that flows to the first cover portion C1 and the first cover portion C2 'the connecting element 72 between the first cover portion ci and the second cover portion C2' not only enhances the cylindrical shape The first and second cover portions protrude and make it easy to mold the cooling water inlet / outlet cover c. Next, modifications of the previous embodiment will be described. The heat exchanger for supplying cooling water from the outflow paths 21, 22 may be composed of only the heater core 29 or the throttle body 7.

One of the coating-area-opposing area may be formed on the cooling water inlet and at least the installation-area-opposing area may be formed on the mounting surface 40 of the cylinder head 2. It is also possible to tightly seal the first cover portion ci and the cylinder with liquid

554133 A7 B7 V. Description of the invention (13 heads and 2 connections, and the connection between the flute seal C2 and the cylinder head 2 is sealed with an elastic material cymbal ring. The container part can be made on the cylinder head 2 mounting surface 4〇 Xiyiba sub-surface 40a, instead of the cooling water inlet / outlet cover C mounting surface 60 ;: the eighth w also distinguishes the surface 60a. Alternatively, it can be made on the cooling water inlet / outlet soap C distinguishing surface 60a. The mounting surfaces 40, 60 of the cylinder head 2 and the distinguishing surface 40a of the cylinder head 2. For the purpose of increasing the surface pressure, the groove of the liquid pressing 54 is not held by the groove to interrupt the liquid pressing 54 and move to the installation area 47, a Balls may be provided on the distinguishing surface 60a to be slightly raised from the mounting surface 60, or on the distinguishing surface 40a, to be slightly raised from the mounting surface 40. Although the previous embodiment positions the thermostat type opening / closing mechanism 15 for By extending through the inlet 42 and covering the entire adjustment chamber 14 of the cylinder head 2, the thermostat as a whole can be accommodated in the adjustment chamber 61 defined by a single cylinder head 2 or only by the cooling water inlet / outlet cover C. Thermostat type open / close hood can be lifted Supplied in cylinder group. -16- This paper size is applicable to China National Standard (CNS) A4 (210X297 mm)

Claims (1)

No. 091108231 Patent Application Chinese Patent Application Replacement (July 1992) Patent application scope 554133 1. An internal combustion engine having a cooling water inlet / outlet cover c attached to one side surface of the internal combustion engine body (2) to cover the cooling water inlet and outlet of the internal combustion engine body. The cover (C) includes a The first cover part (C1) and a second cover part (C2) 4 of which the first cover part (Cl) covers the entrance and defines an inflow path with the thermostat type opening / closing mechanism (15) to introduce The cooling water of the radiator (25) and the second cover (C2) cover the outlet, which is characterized in that: the outlet includes a first outlet (49) and a second outlet (52), the second cover (C2) forming a first outflow path (21), which guides cooling water from the first outlet (49) to the radiator (25), and a second outflow path (22), which passes through the partition (68) It is distinguished from the first outflow path (21) and guides the cooling water from the second outlet (52) to the heat exchanger (29). 2. The internal combustion engine according to item 1 of the scope of patent application, wherein the second outflow path (22) includes a connection portion (67) that guides the cooling water from the second outlet (52) to the throttle body (7). 3. If the internal combustion engine of claim 1 or 2 is applied for, the surface (40, 60) of the internal combustion engine body (2) and the cooling water inlet / outlet cover (0) The interface between one of the first and second cover portions (Cl, C2) is sealed by an elastic material washer (46), and the internal combustion engine block (2) and other first and second cover portions ( The interface between Cl, C2) is sealed by the liquid pressure (54), and the installation area (47) of the elastic material gasket (46) or the installation area opposite the installation area (47)-area-opposite area (69 ) And the coating area (55) of the liquid pressing (54) or the coating-area-opposing area (70) opposite the coating area (55). The paper size is applicable to the Chinese National Standard (CNS) A4 size (210 X 297 mm) 554133 A8 B8 C8 At least one of the mounting surface (60) portion of the cooling water inlet / outlet cover (c) includes a blocking portion (71), which interrupts the liquid pressing (54), and the protruding portion is coated by the coating. The area (55) penetrates the installation area (47). 4. If the internal combustion engine of the third item of the patent application, the blocking part (7) in the middle is a recessed part. 5 · For the internal combustion engine of the fourth item of the patent application, the recessed part is all grooves. '6. If the internal combustion engine of the Zhuo Li scope item 1 is applied, the first cover portion and the second cover portion (C2) are connected by a connecting element (72). -2- This paper size applies the Chinese National Standard (CNS ) A4 size (210 X 297 mm) 554133 Patent Application No. 091108231 Patent replacement page (July 1992) ΓΟ X