TW513518B - Cooling system for water-cooled engine - Google Patents

Abstract

A thermostat, which controls, according to the temperature of cooling water, whether the cooling water from a water jacket is to be fed to a radiator or not, is attached to a cylinder block while avoiding an increase in size of the cylinder block. A thermostat 18 is mounted to a cylinder block 10 in such a manner that the axis of a slide hole 21 is parallel to the axes of cylinder bores, the thermostat 18 comprising a housing 20, a wax case 24, and wax, the housing 20 having an inlet hole 35 and an outlet hole 36 opposed to each other, the wax case 24 being slidably fitted in the housing 20 so as to be slidable between a blocking position for blocking communication between the inlet hole 35 and the outlet hole 36 and a communicating position for establishing communication between the inlet and outlet holes 35 and 36, and the wax being contained in the wax case 24 so as to permit the wax case 24 to slide in accordance with expansion and contraction of the wax caused by a change in temperature of cooling water.

Description

513518 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention belongs to a cylinder block of a water-cooled engine, which controls whether cooling water is sent to the cylinder according to the temperature set in the cylinder block. [Known Technology] Such a cooling device is known as the one disclosed in the No. [Problems to be Solved by the Invention] However, in the above-mentioned conventional technology, the direction orthogonal to the axis is adopted as the operation direction, and the thermostat protrudes from the cylinder block to the side. Therefore, the inclusion of the thermostat is included. In view of the above-mentioned problems, the cooling device of the engine of the present invention can increase the size of the thermostat. [Means for Solving the Problem] In order to achieve the above-mentioned purpose, a patent application is characterized in that a cylinder head having a cylinder inner diameter is provided with a cooling water temperature of a water jacket and a water jacket to communicate with each other to control whether or not the device is installed in the foregoing On the cylinder block, this constant line is parallel to the axis of the inner diameter of the cylinder and the following pieces are: 1) The housing has a sliding hole and a cooling device. The thermostat is installed and the cooling of the water jacket of the cylinder head = the heater. Japanese Patent Laid-Open No. Hei 10—1 6852 The cylinder block has the inner diameter of the cylinder. The thermostat is mounted on the gas red body. The overall cylinder block of the thermostat is large in size. It is to provide a water-cooled cylinder block to avoid the cylinder. The first invention of the body range is the following cylinder block and the inner diameter of the gas red. In addition, the shaft of the sliding hole may be mounted on the cylinder block in accordance with the thermostat of the cooling water supply radiator, and the inner surface of the sliding hole may be opposite to each other.

W312 \ 2d-code \ 90-09 \ 90115567.ptd Page 6 丄 δ 5. Description of the invention (2) Opening entrance hole and Ψ Γ7 71 .. ,,, J3L hair ^ -Γ A / c ^ ^ ^, hole, 2) The M box may be fitted into the box made of the sliding hole described above, which can block the entrance between the entrance hole and the exit hole and open the entrance hole. Between the communicating position with the outlet hole, slide = operation '3: The wax block inside the wax box can expand and contract with the cooling water temperature X Ai to make the soil box slide. According to this application, the structure of the invention in item 1 of the patent scope, the direction of operation of the thermostat is parallel to the axis of the inner diameter of the gas red. Protruding from the side is too large and can be avoided, the cylinder is larger. Furthermore, the thermostat can be placed close to the cylinder 仫, which can return the thermostat performance of the thermostat and make it less susceptible to the influence of outside air to improve the cooling performance. The invention of the second scope of the patent application is further characterized by the structure of the first invention of the scope of the aforementioned patent application. A plurality of cylinder inner diameters are arranged on the gas red body, and the thermostat is adjacent to each other. A pair of cylinders with an inner diameter is arranged on the cylinder block. According to this structure, by effectively utilizing the space between the inner diameters of the cylinders to arrange the thermostat, it is possible to more effectively avoid the enlargement of the k-shaped red body due to the clothes but the thermostat, and the strange thermostat can be closer to the configuration. The inner diameter of the cylinder can further improve the temperature sensing performance of the thermostat, and further improve the cooling performance. Furthermore, the invention of item 3 of the 'Shenqing Patent Range' is characterized by being based on the structure of the first invention of the above-mentioned application patent range, and a cylinder block is provided with a bottomed mounting hole opening on the cylinder head side for insertion. Install the aforementioned thermostat, so that the open end of the mounting hole is closed by the gas red head, which can prevent the thermostat from detaching from the mounting hole. With this structure, there is no need to close the dedicated part of the mounting hole

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丄 ~ iO

It is possible to reach parts to prevent the strange thermostat from being exposed. [Embodiments of the invention] The following will be described with reference to the drawings. Decreasing the number to increase the influence of the gas and improve the cooling. The embodiment of the present invention is of an I-type, and the performance can be assured. Demonstration of the implement of the present invention = 2 is to show the first embodiment of the present invention 'FIG. 1 is a longitudinal sectional view of the main part of a cylinder block and a cylinder head equipped with a strange temperature > 9-9, FIG. 2 is a view of FIG. 1

Heng: The plan view of the cylinder block seen in the direction of Cui Ershuo. Figure 3 is a low-temperature: 4 side view, Figure 4 is a longitudinal sectional view of the thermostat in a high-temperature state, and Figure 5 is the strange line 5-5 of Figure 4. Sectional view of the thermostat. Figure β is a sectional view of the thermostat along line 6-6 in Figure $. First, in FIG. 1 and FIG. 2, for example, a red body 1 0 ′ equipped with a four-red engine is provided with a four-cylinder inner diameter 11, 11... In each row. The disengaging piston 1 2 ··· can be used for sliding action. The combustion chamber 13 near the top of each piston 12 ... is formed between the cylinder block 10 and the cylinder head 4 and a part of the cylinder head 14 corresponding to each combustion chamber 1 3 ... is provided The suction valves 15 ... and the exhaust valves 16 ... can be opened and closed. The cylinder block 10 and the cylinder head 14 are provided with an interconnecting water jacket 17, which surrounds each cylinder inner diameter 11, 11 ... and each combustion chamber 1 3 ..., and fits from this water jacket 1 7

The thermostat 18, which controls the cooling water temperature to supply cooling water to the radiator R, is installed in the cylinder block 10, corresponding to the inner diameter of a pair of cylinders arranged at the center of the cylinder bore diameters 11, 11 ... 11,11 rooms. In Figs. 3 and 4, the casing 20 of the thermostat 18 is formed into a bottomed cylindrical shape with an attached section, and one end thereof is formed with an open sliding hole 21. The other end of the housing 2 is equipped with

\\ 312 \ 2d-code \ 90-09 \ 90115567.ptd Page 8 513518 V. Description of the invention (4) Bottom cylindrical seal made of elastic material, — 22 the inner part of the inner end of the closed end, the shell 2 〇 = Fork seal member portion 20a. The other way out is to become the inner diameter of the milk cylinder on the moon-reinforced cylinder 10 of the tip-reinforcing hole. ^ Corresponding to the arrangement direction of the inner diameters of the cylinders u, n ... The central part t = 23 to accommodate the aforementioned Outer ㈣ 'Because the gas red head is "2 = = together, the open end of this mounting hole 23 can be secured by the cylinder head = Z. Moreover, the casing 20 is clamped between the closed end and the space of the mounting hole 23, and is fixed to the installation. In the hole 23. Evening: In the sliding hole 21 of J20, the wax box 2 is to be combined with the following two: 1) the box main body 25, #outside direct contact / moon movement hole 21, 2) the cripple 26, combined In the box main body 25. The small-diameter cylindrical portion 25a of each main body = one or two is intended to fit inside the two sealing members 22 of the housing 20 to facilitate sliding movement. The box main body 25 and the cover 26 The peripheral edge of the diaphragm 27 is sandwiched between them, and a wax block 28 is installed in the wood 24 to fill the diaphragm 27 and the cover 26 2 2 2 Ik = expansion and contraction due to changes in degree, which will deform the diaphragm 27. Another On the other hand, in the small-diameter cylindrical portion 25a of the box main body 25, a rod 2 丄 2 ^ plate 30, which is blocked by the reinforcing portion 20a of the tip end of the casing 20, and rubber are sequentially fitted on the opposite side of the diaphragm 27. The false piston 31 can be used as a slippery ‘Even’ person 1 ^ film 27, the medium 32 is filled in the wax box 24, and the deformation of the film F 27 is transmitted to the aforementioned rubber piston 31.

M3518, description of the invention (5) "An inner side of one end of the casing 20 is provided with a anti-pulley 33, and a spring 34 is provided between the anti-pulley 33 and the broken box 24" to press the wax box 24 to the other end of the casing 20. When the cooling water temperature is low and the wax block 28 is in a contracted state, as shown in FIG. 3, the soil box 2 is tied to the blocking position on the other side of the outer shell 2. If the cooling water temperature and direction make the soil block 2 8 If it expands, the diaphragm 27 will bend to the lower side of Fig. 4 and deform. As the tip reinforcement portion 20a is pushed out of the small-diameter cylindrical portion 25a, the wax box 24 gradually compresses the spring 34, as shown in Fig. 4 As shown in the figure, it slides to the communicating position on the end of the housing 20-end. As seen in Fig. 5, the housing 20 is provided with an inlet hole 35 and an outlet hole 36 opposite to the inlet. Hole 21 is on a diameter line. _, 4 The connection and interruption between the inlet hole 3 5 and the outlet hole 3 6 are switched according to the sliding sliding of the wax box 24 which can be slid in the outer cover 20 7. Figure 3 shows the wax When the box 24 f is in the blocking position, the entrance hole 35 and the exit hole 36 are blocked. FIG. 4 shows that the wax box 24 is communicated between the entrance hole 35 and the exit hole 36 in the communicating position. Out, the water jacket 17 on the side of the cylinder head 14 is connected to the radiator r through the cooling water pipe 37, and this radiator r is connected to the suction port of the water pump p, and the spit of the water gathering is connected to the cooling water pipe. 38. The water supply channel 39, which is also provided in the cylinder block i0, is connected to the other end of the cooling water pipe 38, and the water supply channel 39 is connected to the inlet hole 35 of the housing 20. Furthermore, it is connected to the water supply channel. 39 coaxial 'is provided with a passage 40 in the cylinder block 10, so that the outlet hole 36 of the aforementioned housing 20 leads to the water jacket 17. The opposite side of the housing 20, as shown in Fig. 5, is provided with a pair of protrusions. The strips 41 and ^ extend in the axial direction of the housing 20, and these protrusions 4 1, 41 can be embedded in a groove (not shown) provided on the inner surface of the mounting hole 22, so that the housing 20 is inserted into the mounting hole 22

513518 V. Description of the invention (6), at regular time, the water supply channel 39 can be surely connected to the inlet hole 35, and the channel 40 is surely connected to the outlet hole 36. Referring to FIG. 6 as well, the casing 20 is provided with a detour at 42 adjacent to the entrance hole 35. When the wax box 24 is at the communication position between the entrance hole 35 and the exit hole (the position shown in FIG. 4), this detour The hole 42 is blocked by the wax box, and is opened when the wax five 24 slides to the blocking position (the position shown in FIG. 3). On the other hand, at the end of the casing 20, the wax box 24 and the cylinder head 14 When the wax box 24 blocks the position between the inlet hole 35 and the outlet hole 36, the bypass hole 42 is connected to the water chamber 43. The cylinder head 14 is provided with a water chamber. The connection pipe 44 of 43 is connected to the suction port of the water pump P through the bypass line 45. a So 'When the cooling water temperature in the water jacket 1 7 is low, the thermostat 8 is blocked into the second hole. 35 and the outlet hole 36, and at the same time, the inlet hole 35 and the water are connected to the 43 through the bypass hole 42. In this way, the cooling water discharged from the water pump p passes through the thermostat 18 and returns to the water pump p, but the water The cooling water of the jacket 7 will not be sent to the heat sink R ° and the temperature of the cooling water in the jacket 1 7 will rise. When the warm-up is completed, the strange temperature controller 18 will cause the inlet hole 35 and the outlet The mouth holes 36 communicate with each other, and at the same time, the bypass hole 42 is closed to block the inlet holes 35 and the water chamber 43. In this way, the cooling water spit by the water pump p is supplied from the thermostat 8 to the water jacket 7 and then by the water jacket丨 7 sends back the water pump p through the radiator R.… Next, the function of this first embodiment will be described. Since the thermostat 18 is mounted in the cylinder block 1 in parallel with the axis of each cylinder's inner diameter 丨 丨, 11 ... 〇 Upper two therefore blame the thermostat 18 does not protrude too much from the side of the cylinder block 10, and can avoid the large size of the cylinder block 10. Also, the thermostat 18 can be brought closer to the inner diameter of the cylinder

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Page 11 513518, Description of the Invention (7) 11, 11 ··· It can be configured to improve the temperature sensitivity of the thermostat 丨 8 It is not easily affected by the outside air to improve the cooling performance. "When a plurality of (for example, four) in-cylinder scales 11 are arranged side by side in the cylinder block 10, the above-mentioned thermostat 18 can be installed in the cylinder block 10 and opposite to the center of the arrangement direction of two, inner diameters 11, and 1... Rows—for gas red inner, “wide,” and “1” By effectively using the thermostat U between the cylinder inner diameters n and u, it is possible to more effectively avoid the two due to the installation of a strange thermostat = large size, and The thermostat can be closer to the inner diameter of the cylinder i, the body of the body J: can further improve the temperature sensing performance of the strange thermostat, and further improve the second: Furthermore, 'Set an opening in the cylinder block 丨 〇 in the cylinder head 1 Holes 23 on the 4 side for inserting and installing the aforementioned thermostatic-women's end is sealed by the cylinder head 14. The μ te, w openings of this women's hole 23 can be separated the next day, so U = = no need to install from here The number of holes 23 is reduced to increase: two parts are used, and the parts can be affected by outside air to further improve the cooling performance. ^ 18 FIG. 7 shows a portion ′ corresponding to the second embodiment of the present invention using the same component number. The conventional example has four gas-red inner diameters n, u, ... arranged in parallel in the cylinder block 10 ', and the gas-red inner diameters on one end side of the arrangement direction of the gaseous red ... U, u ... Through the bottomed mounting holes 23 parallel to the axis of 11, 1, 1 ..., the open ends are added by the gas red head 14 (refer to the first embodiment), closed and matched with the cooling water temperature from this water jacket 17 to control Whether to supply cold water to the thermostat 18 of the radiator R (refer to FIG. 1),

513518 5. Description of the invention (8) The mounting hole 23 'is inserted and installed in the cylinder block 10'. This second embodiment can also achieve the same effect as the first embodiment. The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, as long as it does not deviate from the scope of the patent application In the present invention, various design changes can be made. For example, the housing 20 of the thermostat 18 may be integrally formed with the cylinder blocks 10 and 10 '. [Effects of the Invention] As described above, according to the invention described in the first patent application range, the thermostat is installed in the cylinder block, and the thermostat does not protrude from the cylinder block to the side too much, and the cylinder block can be avoided. Large-scale. Moreover, the thermostat can be arranged close to the inner diameter of the cylinder, which can improve the temperature sensing performance of the thermostat and make it less susceptible to the influence of outside air to improve the cooling performance. According to the invention described in the second patent application scope, by effectively utilizing the space between the inner diameters of the cylinders to arrange the thermostat, the size of the cylinder block caused by the thermostat can be more effectively avoided, and the thermostat can be further increased. The temperature sensing performance of the device further improves the cooling performance. Furthermore, according to the invention in the third scope of the patent application, the number of parts can be reduced to improve the assemblability, and the thermostat can be more reliably prevented from being affected by outside air to improve the cooling performance. [Explanation of component number] I 0, 1 0 ’Cylinder block II Cylinder inner diameter

C: \ 2D-CODE \ 90-09 \ 90115567.ptd Page 13 513518 V. Description of the invention (9) 12 Piston 13 Combustion chamber 14 Cylinder head 15 Intake valve 16 Exhaust valve 17 Water jacket 18 Thermostat 20 Housing 21 Slide 孑 L 23 > 23J Mounting hole 24 Kan box 25 Box body 26 Cover 27 Diaphragm 28 Kan block 29 Rod-shaped piston 30 Disk-shaped plate 31 Rubber piston 32 Media 33 Anti-roller 34 Spring 35 Inlet 孑 L 36 Outlet 孑 L 37 Cooling water line

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\\ 312 \ 2d-code \ 90-09 \ 90115567.ptd Page 15 513518 Brief Description of Drawings Figure 1 is a longitudinal sectional view of the main parts of the cylinder block and cylinder head with the thermostat installed. FIG. 2 is a plan view of the cylinder block as viewed from the direction of the arrow of line 2_2 in FIG. 1. Fig. 3 is a longitudinal sectional view of the thermostat in a low temperature state. Fig. 4 is a longitudinal sectional view of the thermostat in a high temperature state. Fig. 5 is a sectional view of the thermostat taken along line 5-5 of Fig. 4. Fig. 6 is a sectional view of the thermostat taken along line 6-6 in Fig. 4. Fig. 7 is a plan view of a cylinder block corresponding to Fig. 2 of the second embodiment.

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Claims (1)

513518 6. Scope of patent application1. A cooling device for water-cooled engine, which is provided with a water jacket 17 communicating with each other to the cylinder block 10, 10 with cylinder # 11, and 5 members of the cylinder combined with the cylinder inner diameter 11. The temperature of the cooling water from the aforementioned water jacket 17 can be controlled to control whether or not; the water supply radiator R of the command section is mounted on the aforementioned cylinder block 10, 10, and the thermostat 18 'is characterized by: The thermostat 18 has a sliding hole 21 and a housing 20 provided with an inlet hole 35 and an outlet hole 36 facing each other on the inner surface of the osteosynthesis hole 21; sliding is possible to fit into the aforementioned sliding hole 21 The wax box 2 4 can be used to slide between the blocking position between the inlet hole 35 and the outlet hole 36 and the communication position between the inlet hole 35 and the outlet hole 36; and it can be accompanied by the cooling water temperature. The expansion and contraction changes and the sliding box 28 is mounted in the wax block 28 of the wax box 24; the axis of the sliding hole 21 and the axis of the cylinder inner diameter 11 are mounted in parallel to the cylinder 10 , 1〇 ,. 1-2 · The cooling device of the water-cooled engine according to item 1 of the scope of patent application, in which a plurality of cylinder inner diameters are arranged in parallel with the aforementioned cylinder block 10, and the aforementioned thermostats 18 are arranged adjacent to each other The inner diameter of a pair of cylinders is mounted on the cylinder block 10. Can prevent the thermostat 1 8 from 3. If the cooling device of the water-cooled engine of item 1 of the scope of patent application, in the middle, a cylinder block 10, 10 'is provided with an opening at the cylinder head 14 side and a bottomed ^ mounting hole 23 , 23, for inserting and installing the above-mentioned thermostat 18, so that the open ends of 2 3, 2 3 ′ are closed by the cylinder head 1 4, and the mounting holes 23, 23 ′ are detached. \\ 312 \ 2d-code \ 90-09 \ 90115567.ptd