CN105275656A - Internal combustion engine - Google Patents
Internal combustion engine Download PDFInfo
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- CN105275656A CN105275656A CN201510369822.1A CN201510369822A CN105275656A CN 105275656 A CN105275656 A CN 105275656A CN 201510369822 A CN201510369822 A CN 201510369822A CN 105275656 A CN105275656 A CN 105275656A
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- Prior art keywords
- cylinder
- cooling water
- mentioned
- mode
- guide plate
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/021—Cooling cylinders
Abstract
The invention provides an internal combustion engine capable of suppressing the temperature unevenness of a cylinder in a circumferential direction. The internal combustion engine (100) includes: a cylinder (3); a water jacket (4) that is formed so as to surround an outer periphery of the cylinder; and a cooling water guide section (6) that is disposed on an inside of the water jacket and guides cooling water such that the cooling water flows equal to or more than one lap along the outer periphery of the cylinder.
Description
Technical field
The present invention relates to internal-combustion engine, particularly relate to the internal-combustion engine possessing cylinder and water jacket.
Background technique
In the past, the known internal-combustion engine (for example, referring to patent documentation 1) possessing cylinder and water jacket.
At the internal-combustion engine of the above-mentioned water jacket that Patent Document 1 discloses 3 cylinders with aligned in straight columns and formed in the mode of the periphery along 3 cylinders.Water jacket is formed in the mode of the surrounding surrounding 3 cylinders formed continuously.In water jacket, from the supplying mouth of a square end side of the orientation of 3 cylinders towards the exhaust port of the opposing party side supply cooling water.In the internal-combustion engine described in this patent documentation 1, be provided with fill up in water jacket from neutral position to bottom till the filling component of middle and lower part.To the cooling water upper side circulation relatively becoming high temperature in the cylinder of water jacket supply, do not circulate in the middle and lower part relatively becoming low temperature.Thus, in above-mentioned patent documentation 1, the homogenization of the temperature distribution of the upper and lower of cylinder is realized.
prior art document
patent documentation
Patent documentation 1: JP 2012-202290 publication
Summary of the invention
the problem that invention will solve
But the internal combustion function described in above-mentioned patent documentation 1 realizes the homogenization of the temperature distribution of the upper and lower of cylinder, on the other hand, do not consider the temperature distribution of the circumference of each cylinder.Therefore, exist and cannot reduce the irregular problem of the temperature of the circumference of each cylinder.When the temperature producing circumference is in the cylinder irregular, produce difference and the deterioration of the circularity of cylinder in the thermal expansion of circumference, consequently, the tracing ability of piston ring reduces, and fuel consumption easily increases.
The present invention completes to solve above-mentioned this problem, and 1 object of the present invention is to provide the internal-combustion engine that the temperature of the circumference of cylinder can be suppressed irregular.
for the scheme of dealing with problems
In order to achieve the above object, the internal-combustion engine of one aspect of the present invention possesses: cylinder; Water jacket, it is formed in the mode of the periphery surrounding cylinder; And cooling water guide portion, it is configured in water jacket, and guide cooling water flows more than 1 week along the periphery of cylinder.
In internal-combustion engine in one aspect of the invention, as mentioned above, be provided with: water jacket, it is formed in the mode of the periphery surrounding cylinder; And cooling water guide portion, it is configured in water jacket, and guide cooling water flows more than 1 week along the periphery of cylinder.Thus, the cooling water to water jacket internal feed can be made to circulate more than 1 week in the circumference of cylinder, on the complete cycle of cylinder, therefore can carry out the cooling of cylinder equably.Thus, the uniform cooling by the circumference of cylinder suppresses the temperature of the circumference of cylinder irregular.Consequently, the thermal expansion of the circumference of cylinder realizes homogenization, not easily causes the deterioration of circularity, so can realize the suppression of fuel consumption.
In internal-combustion engine preferably in above-mentioned one, cooling water guide portion comprises the periphery extension cooling water guide plate of more than 1 week along cylinder, and cooling water guide plate is that the periphery obliquely along cylinder between the upper dead center side and lower dead centre side of cylinder extends and formed.If formed like this, then except can make cooling water on the complete cycle of cylinder circumferentially circulation except, cooling water can also be made spirally to circulate along cylinder periphery between upper dead center and lower dead centre.Consequently, except the temperature of the circumference that can suppress cylinder is irregular, the temperature of the axis of cylinder irregular (making temperature distribution realize homogenization) can also be suppressed.
In this case, preferred cooling water guide plate is formed in the following manner: the interval between the cooling water guide plate axially of cylinder is along with becoming large gradually from trend lower dead centre side, upper dead center side.If formed like this, then when being set to constant by the flow of cooling water, reducing the interval between sheet in upper dead center side, flow velocity can be made thus relatively to become large, flow velocity can be made to tend to lower dead centre side and diminish gradually.That is, the heat trnasfer of the upper dead center side of the cylinder relatively becoming high temperature can be made relatively high, make heat trnasfer become the lower dead centre side of low temperature gradually along with trend and reduce gradually.Consequently, the temperature distribution of the axis of cylinder can be made to realize homogenization further.
Preferably be provided with in the formation of the cooling water guide plate circled round along the periphery of cylinder obliquely between the upper dead center side and lower dead centre side of cylinder above-mentioned, water jacket has the supplying mouth of the cooling water of the upper dead center side being located at cylinder and is located at the exhaust port of lower dead centre side of cylinder, and cooling water guide plate is formed in the following manner: flowed in the periphery from the cooling water of supplying mouth supply along cylinder and be directed to exhaust port in more than 1 week.If formed like this, then the cooling water of more low temperature can be utilized to cool the upper dead center side relatively becoming high temperature in advance, can make due to flow through upper dead center side and temperature rise after cooling water flow through relatively becoming low temperature lower dead centre side.Thus, the temperature distribution of the axis of cylinder can be made further to realize homogenization.In addition, cooling water is made to circle round exhaust port while guide it from supplying mouth by cooling water guide plate, therefore can by means of only supplying mouth and exhaust port being configured in respectively upper dead center side and lower dead centre side and cooling cylinder equably in the circumferential.Consequently, freely can set the position of the circumference of supplying mouth and exhaust port, the degrees of freedom therefore in design improves, the structure (layout) of energy simplified cooling system.
In internal-combustion engine preferably in above-mentioned one, water jacket with complete cycle surround the periphery of independent cylinder mode arrange.If formed like this, then water jacket itself surrounds the periphery of independent cylinder, therefore just can make cooling water easily circulation more than 1 week around cylinder by means of only cooling water guide portion being located in water jacket.In addition, to be set as the situation of surrounding multiple cylinder in the lump different from water jacket, even the internal-combustion engine of multi cylinder also can cool each cylinder individually.Consequently, can be undertaken by each cylinder respectively evenly cooling.
In addition, in this application, except the internal-combustion engine of an above-mentioned aspect, other following formation is also considered.
(remarks item)
That is, in other internal-combustion engine formed of the application, cooling water guide portion is integrally formed on the water jacket partition that configures in water jacket.In addition, in the internal-combustion engine that other is formed, also possess cooling water shielding portion, above-mentioned cooling water shielding portion is configured in the predetermined portion of the lower dead centre side of cylinder, arranges in the mode of filling up the space between the outer circumferential face of cylinder and water jacket partition.In addition, in the internal-combustion engine that other is formed, cooling water guide portion and cylinder splitting ground are arranged, and arrange in the mode of the outer circumferential face being adjacent to cylinder.In addition, in the internal-combustion engine that other is formed, cooling water guide portion is arranged integratedly with the mode of giving prominence to from the outer circumferential face of cylinder and cylinder.In addition, in the internal-combustion engine that other is formed, be integrally formed with cylinder block and head, above-mentioned cylinder block comprises cylinder and cooling water guide portion.
invention effect
Formation according to an aspect of the present invention, as mentioned above, can suppress the temperature of the circumference of cylinder irregular.
Accompanying drawing explanation
Fig. 1 is the figure of the longitudinal cross-section structure of the cylinder block periphery represented in the motor of the 1st mode of execution of the present invention.
Fig. 2 is the schematic perspective view of the structure of dividing plate for illustration of the 1st mode of execution of the present invention.
Fig. 3 is the schematic perspective view of the flowing for illustration of the cooling water in water jacket.
Fig. 4 is the schematic diagram of the lateral cross section structure of the cylinder block represented in the motor of the 2nd mode of execution of the present invention.
Fig. 5 is the schematic sectional view of the V-V line along Fig. 4.
Fig. 6 is the schematic diagram of the 1st variation of the motor representing the 1st mode of execution of the present invention.
Fig. 7 is the schematic diagram of the 2nd variation of the motor representing the 1st mode of execution of the present invention.
description of reference numerals
3,103,303: cylinder
4,104: water jacket
5,105,205,305: water jacket partition
6,106,206,306: cooling water guide portion
7: cooling water shielding portion
43,143: supplying mouth
44,144: exhaust port
61,161,361: guide plate (cooling water guide plate)
100,200: motor (internal-combustion engine)
Embodiment
Below, based on accompanying drawing, embodiments of the present invention are described.
(the 1st mode of execution)
The formation of the motor 100 of the 1st mode of execution of the present invention is described with reference to Fig. 1 ~ Fig. 3.In addition, motor 100 is examples of " internal-combustion engine " of the present invention.
In the 1st mode of execution, the example of the single cylinder gaseous propellant engine applying the present invention to use in co-generation unit is described.In co-generation unit, the output shaft of motor 100 is connected with generator (not shown), and the power of motor 100 is used to generating.In addition, the heat extraction along with the running of motor 100 is recovered, and the heat extraction be recovered is fed into the heat utilization equipment such as the heater unit in facility.
As shown in Figure 1, motor 100 possesses cylinder block 1 integratedly and is located at the cylinder head 2 on top of cylinder block 1.That is, motor 100 has the independent housing structure that cylinder block 1 and cylinder head 2 are integrally formed.The structure 100a comprising cylinder block 1 and cylinder head 2 is the cast member of the aluminum alloy comprised as light metal.
In cylinder block 1, be provided with piston 31 and carry out the cylinder 3 of back and forth movement and the water jacket 4 as cooling water path in inside.Water jacket partition (hereinafter referred to as " dividing plate ") 5 is provided with in water jacket 4.In the 1st mode of execution, cooling water guide portion 6 and cooling water shielding portion 7 are integrally formed in the dividing plate 5 of configuration in water jacket 4.Below, conveniently, the X1 direction in the X-direction extend cylinder 3 is called axial upside, and the X2 direction in the X-direction extend cylinder 3 is called axial downside.In addition, the sense of rotation of the central shaft of the X-direction around cylinder 3 is called " circumference ".
Cylinder head 2 is configured in axial upside (X1 side) relative to cylinder block 1.Each air flue 21 of air inlet and exhaust and a part (upper axial end part) for water jacket 4 is provided with in cylinder head 2.
1 cylinder 3 is formed in cylinder block 1.That is, the motor 100 of the 1st mode of execution is single cylinder engine.Cylinder 3 is formed as substantially cylindrical shape in cylinder block 1.Cylinder 3 is axially to configure in the upper mode extended of the substantially horizontal (X-direction) of transverse direction.In addition, be configured with piston 31 in the inner side of cylinder 3 and be formed as cylindric cylinder sleeve 32.Cylinder sleeve 32 is across the hole wall 35 dry type cover adjacent with water jacket 4.
In the outer circumferential face of piston 31, be provided with multiple piston ring 33, piston 31 is configured to carry out back and forth movement along the X direction between upper dead center in cylinder 3 and lower dead centre.In addition, due to piston 31 back and forth movement, not shown bent axle is rotated continuously via connecting rod (connecting rod) 34.Piston 31 makes piston ring 33 slide while reciprocate along the X direction relative to the inner peripheral surface of cylinder sleeve 32.Piston ring 33 keeps the sealing of firing chamber and scrapes the residual oil of the inner peripheral surface of cylinder sleeve 32 and form appropriate oil film.In addition, piston ring 33 also plays the function as the contact segment heat of piston 31 transmitted to water jacket 4 via cylinder sleeve 32 and hole wall 35.
Water jacket 4 is integrally formed in cylinder block 1 in the mode of the periphery surrounding cylinder 3.Water jacket 4 with complete cycle surround the periphery of independent cylinder 3 mode arrange.Thus, water jacket 4 is formed as substantially cylindrical shape in the mode of the surrounding surrounding cylindric cylinder 3.Water jacket 4 has the function by making cooling water (freezing mixture) at internal circulation, the cylinder block 1 comprising cylinder 3 be remained steady temperature.Water jacket 4 comprises inner peripheral surface 41 as the outer circumferential face of cylinder 3 and outer circumferential face (inner surface of periphery wall) 42.In the X direction, water jacket 4 extends to arrange by the mode of X1 side than the position TD of the piston ring 33 of the upper dead center of piston 31 to extend to position BD than the piston ring 33 of the lower dead centre of piston 31 by X2 side.
In addition, water jacket 4 has the supplying mouth 43 of the cooling water of the upper dead center side (X1 side) being located at cylinder 3 and is located at the exhaust port 44 of lower dead centre side (X2 side) of cylinder 3.Supplying mouth 43 configures by X1 side than the axially end (X1 side end) of cylinder 3.In addition, exhaust port 44 is configured in the position of the bottom dead center-nearby of piston 31.In addition, the position of the circumference of supplying mouth 43 and exhaust port 44 is arbitrary.Supplying mouth 43 is connected with cooling waterpump 8a, supplies cooling water from supplying mouth 43 in water jacket 4.Exhaust port 44 is such as connected with heat exchanger 8b (condenser or radiator etc.), and heat exchanger 8b carries the cooling water in water jacket 4.The cooling water dispelled the heat by heat exchanger 8b is carried by cooling waterpump 8a via circulation stream.Like this, water jacket 4 forms the part making the fluid circuit 8 of cooling water circulation.
The mode that dividing plate 5 is adjacent to inner peripheral surface 41 and outer circumferential face 42 respectively with the inside at water jacket 4 is arranged.Dividing plate 5 is the roughly cylindric parts comprising rubber or resin etc., as shown in Figure 2, comprises the 1st parts 51 and the 2nd parts 52 that are divided into two in the vertical.Dividing plate 5 with complete cycle surround the periphery of cylinder 3 mode arrange.In addition, Fig. 2 schematically illustrates the general shape (drum) of dividing plate 5.In fact, near the axially end of cylinder 3, be particularly provided with each air flue 21 of air inlet and exhaust or the various structures for not shown spark plug etc., therefore dividing plate 5 is formed as the shape of these structure divisions applicable.
As shown in Figure 1, cooling water guide portion 6 has the function flowing of the cooling water in water jacket 4 being directed to exhaust port 44 from supplying mouth 43.Cooling water guide portion 6 is integrally formed in the inner peripheral surface side of dividing plate 5.At this, in the 1st mode of execution, cooling water guide portion 6 is configured to guide cooling water and flows more than 1 week along the periphery of cylinder 3.In the 1st mode of execution, as shown in Figure 3, cooling water guide portion 6 is configured to cooling water is flowed several weeks along the periphery of cylinder 3.In addition, conveniently enclose hachure to the end face part of dividing plate 5 in figure 3 to illustrate.
Cooling water guide portion 6 comprises the guide plate 61 (with reference to Fig. 2) that the periphery along cylinder 3 extends.Guide plate 61 extends several weeks along the periphery (that is, the inner circumferential of dividing plate 5) of cylinder 3.As an example, in the schematic diagram shown in Fig. 2, guide plate 61 is formed in the mode of about 4 weeks of the surrounding around cylinder 3.Guide plate 61 is formed in continuous print mode without interruption.In addition, as mentioned above, dividing plate 5 separates, and therefore guide plate 61 also separates, and is formed at the 1st parts 51 and the 2nd parts 52 respectively.In addition, guide plate 61 is examples of " cooling water guide plate " of the present invention, and cooling water guide plate also can be set to and at bottom dead center-nearby, sheet be interrupted, or the shape that the gap etc. gradually between increase sheet and cylinder periphery makes cooling water block.
Guide plate 61 is configured to make the cooling water supplied from supplying mouth 43 flow several weeks while be directed to exhaust port 44 along the periphery of cylinder 3.That is, guide plate 61 be between the upper dead center side (supplying mouth 43 side) and lower dead centre side (exhaust port 44 side) of cylinder 3 obliquely along cylinder 3 periphery extend and formed.Thus, guide plate 61 is as shown in Figure 3 to make cooling water roughly be formed by the mode of helical flow along the periphery of cylinder 3.In addition, " helical " of the specification of the application uses according to broadly comprising the implication rotating the curve moved up in the side orthogonal with sense of rotation.
Preferred guide plate 61 in the upper dead center side of cylinder 3 around more than 1 week, the periphery of cylinder 3, in lower dead centre side around more than 1 week, the periphery of cylinder 3.In addition, preferred guide plate 61 as shown in Figure 1, the position TD of the piston ring 33 of the upper dead center of piston 31 and than position TD by axial upside (X1 side) around more than 1 week, the periphery of cylinder 3.Thus, cooling water can be made more than 1 week to flow near upper dead center, the temperature of the circumference of the cylinder 3 become near the upper dead center of high temperature therefore particularly can be suppressed irregular.
In addition, guide plate 61 has inner side surface 53 plate-like shape that (cylinder 3 side) is outstanding inside radial direction from dividing plate 5.Further, the inner peripheral surface 41 that guide plate 61 is configured to tip portion (inner side end) and water jacket 4 is adjacent to.Therefore, by adjacent (such as in X-direction, adjacent with the 2nd week place at the 1st week) guide plate 61 and the inner side surface 53 of dividing plate 5 and the inner peripheral surface 41 (outer circumferential face of cylinder 3) of water jacket 4 divide in water jacket 4, be configured for the stream 6a of guide cooling water thus by cooling water guide portion 6.In addition, as shown in Figure 3, the overhang (that is, the distance Da between the inner side surface 53 of dividing plate 5 and the outer circumferential face of cylinder 3) of guide plate 61 tends to lower axial end (X2 side end) for constant from upper axial end (X1 side end).
In addition, guide plate 61 with interval (sheet interval) Db between guide plate 61 in lower dead centre side (X2 side) than being formed in the mode that upper dead center side (X1 side) is large.Particularly in the 1st mode of execution, the interval D b that guide plate 61 is configured between the guide plate 61 on axial X becomes large gradually continuously along with from trend lower dead centre side, upper dead center side.Particularly, with the endface position of the guide plate 61 of Fig. 3 (hachure part) for benchmark, the guide plate position of the every half cycle from supplying mouth 43 side is set to position P0 ~ P7.Further, the sheet interval D b of each guide plate 61 adjacent is in the X direction set to interval D 1 ~ D6 in order from supplying mouth 43 side (upper dead center side).The mode that guide plate 61 becomes D0 < D1 < D2 < D3 < D4 < D5 < D6 with these intervals is formed.Consequently, the flowing path section area of the stream 6a be made up of cooling water guide portion 6 is along with becoming large gradually from trend lower dead centre side, upper dead center side.Consequently, become large from the flow velocity of the cooling water of supplying mouth 43 supply in upper dead center side, along with trend lower dead centre effluent speed diminishes gradually.
The flowing path section area of stream 6a is the product (Da × Db) of distance Da between the inner side surface 53 of dividing plate 5 and the outer circumferential face (inner peripheral surface 41 of water jacket 4) of cylinder 3 and the sheet interval D b (D1 ~ D6) between guide plate 61.Therefore, the flowing path section area needed for the flow velocity of the expectation in order to realize cooling water decides the overhang (distance Da) of guide plate 61 and the sheet interval D b (D1 ~ D6) of each position.Wherein, flowing path section area is set to more than the minimum flowing path section area of fluid circuit 8 (with reference to Fig. 1) entirety becoming cooling water.In addition, the thickness t (with reference to Fig. 2) of guide plate 61 is maximum also less than the minimum interval (D1) between guide plate 61.On the basis of guaranteeing mechanical strength, form guide plate 61 in the mode that thickness t is little as far as possible.
Cooling water shielding portion 7 is configured in the predetermined portion of the lower dead centre side of cylinder 3 as shown in Figure 1, arranges in the mode of filling up the space between the outer circumferential face of cylinder 3 and dividing plate 5.Particularly, cooling water shielding portion 7 is located at the position BD of the piston ring 33 in the lower dead centre of piston 31 in axis (X-direction).Cooling water shielding portion 7 is formed as the heavy section of dividing plate 5, to fill up position BD in water jacket 4 and to arrange by the mode in the space of X2 side than position BD.Consequently, the circulation of the cooling water in water jacket 4 in the region of position below BD (position BD and than position BD by X2 side) the water shielding portion 7 that is cooled suppresses.In addition, the circulation of cooling water is hindered at cooling water shielding portion 7 place, so the exhaust port 44 of cooling water is configured in than cooling water shielding portion 7 by axial upside (X1 side).
Below, the cooling action of the motor 100 of the 1st mode of execution is described with reference to Fig. 1 and Fig. 3.In addition, in figure 3, the flowing of cooling water is represented with arrow C W.In figure 3, the size (thickness) of arrow C W represents the size of cooling water flow velocity.
As shown in Figure 1, along with the running of motor 100, the cooling water CW from cooling waterpump 8a supplies in water jacket 4 from supplying mouth 43.As shown in Figure 3, the cooling water CW flowed into from supplying mouth 43 along the outer circumferential face 42 of water jacket 4 circle round on one side be configured with dividing plate 5 axially on the downside of (X2 side) flow.In addition, now, a part of cooling water CW also flows to axially end face (firing chamber) side of cylinder 3 and the X1 side part of water jacket 4 is full of.
When cooling water CW arrives axially end (the X1 side end) of dividing plate 5, cooling water CW flows into cooling water guide portion 6.Afterwards, cooling water CW flows in the stream 6a divided by the inner side surface 53 of guide plate 61 adjacent in the X direction and dividing plate 5, turns thus around the periphery of the upper dead center side part of cylinder 3 dish.The upper dead center side part of cylinder 3 is coiled the cooling water CW turned and is cooled equably in circumference, and the temperature distribution of circumference realizes homogenization.In addition, now, in upper dead center side, the sheet interval D b of guide plate 61 is relatively little, and therefore the flow velocity of cooling water CW relatively becomes large, effectively carries out the cooling of the upper dead center side part of the cylinder 3 becoming high temperature.
Along with the cooling water CW spirally flowed enters axial downside, the interval of guide plate 61 becomes large gradually.Consequently, the flow velocity of cooling water CW also reduces gradually.In addition, along with cooling water CW enters axial downside, the temperature of cooling water CW rises.Consequently, in the lower dead centre side of cylinder 3 relatively becoming low temperature, suppress to be exceeded desirably to cool, the temperature distribution of the axis of cylinder 3 realizes homogenization.In addition, cooling water CW also turns around the periphery of cylinder 3 dish in the lower dead centre side of cylinder 3, and therefore in the same manner as upper dead center side, the temperature distribution of circumference achieves homogenization.
Afterwards, when cooling water CW arrives the cooling water shielding portion 7 in lower axial end portion of dividing plate 5, the water shielding portion 7 that is cooled of the flowing to side, X2 direction hinders.Then, cooling water CW is discharged from exhaust port 44 rapidly.Above as a result, on the complete cycle of cylinder 3 temperature distribution of circumference realize homogenization (suppress temperature irregular).In addition, cooling water CW is spirally transported to exhaust port 44 from supplying mouth 43, and the temperature distribution of the axis of cylinder 3 also realizes homogenization thus.In the 1st mode of execution, as implied above, carry out the cooling action of motor 100.
In the 1st mode of execution, following effect can be obtained.
In the 1st mode of execution, as mentioned above, the water jacket 4 that the mode arranging the periphery surrounding cylinder 3 is formed; And be configured in water jacket 4, guide cooling water is along the periphery flowing cooling water guide portion 6 of more than 1 week of cylinder 3.Thus, cooling water can be made more than 1 week to circulate in the circumference of cylinder 3, on the complete cycle of cylinder 3, therefore can carry out the cooling of cylinder 3 equably.Thus, the uniform cooling by the circumference of cylinder 3 suppresses the temperature of the circumference of cylinder 3 irregular.Consequently, the thermal expansion of the circumference of cylinder 3 realizes homogenization, not easily causes the deterioration of circularity, therefore can realize the suppression of fuel consumption.
In addition, in the 1st mode of execution, as mentioned above, the periphery extension guide plate 61 of more than 1 week along cylinder 3 is set.Further, by guide plate 61 be between the upper dead center side and lower dead centre side of cylinder 3 obliquely along cylinder 3 periphery extend and formed.Thus, cooling water can be made spirally to circulate along the periphery of cylinder 3 between upper dead center side and lower dead centre side.Consequently, except the temperature of the circumference that can suppress cylinder 3 is irregular, the temperature of the axis of cylinder 3 can also be suppressed irregular.
In addition, in the 1st mode of execution, as mentioned above, the sheet interval D b between the guide plate 61 guide plate 61 being configured to the axis of cylinder 3 is along with becoming large gradually from trend lower dead centre side, upper dead center side.Thus, if be set to constant by the flow of cooling water, then by making flow velocity relatively become large at constriction sheet interval, upper dead center side, flow velocity can be made to tend to lower dead centre side and diminish gradually.Consequently, the temperature of the axis of cylinder 3 can be made to realize homogenization further.
In addition, in the 1st mode of execution, as mentioned above, supplying mouth 43 is set in the upper dead center side of cylinder 3, exhaust port 44 is set in the lower dead centre side of cylinder 3.Further, to make the cooling water supplied from supplying mouth 43 flow more than 1 week while the mode to exhaust port 44 guiding is formed guide plate 61 along the periphery of cylinder 3.Thus, can cool with the cooling water of more low temperature the upper dead center side relatively becoming high temperature in advance, the lower dead centre effluent that the cooling water after upper dead center side temperature rises relatively to become low temperature can be made to lead to.Consequently, the temperature of the axis of cylinder 3 can be made further to realize homogenization.In addition, cooling water is made to circle round exhaust port 44 while guide it from supplying mouth 43 by guide plate 61, therefore be configured in upper dead center side and lower dead centre side respectively by means of only by supplying mouth 43 and exhaust port 44, just can cool cylinder 3 equably in the circumferential.Consequently, freely can set the position of the circumference of supplying mouth 43 and exhaust port 44, the degrees of freedom therefore in design improves, the structure (layout) of energy simplified cooling system.
In addition, in the 1st mode of execution, as mentioned above, with complete cycle surround the periphery of independent cylinder 3 mode water jacket 4 is set.Thus, water jacket 4 itself surrounds cylinder 3, therefore just easily can make cooling water circulation more than 1 week around cylinder 3 by means of only cooling water guide portion 6 being arranged in water jacket 4.
(the 2nd mode of execution)
Below, with reference to Fig. 4 and Fig. 5, the 2nd mode of execution is described.In the 2nd mode of execution, different from above-mentioned 1st mode of execution of the single cylinder gaseous propellant engine 100 applying the present invention to use in co-generation unit, illustrate and apply example of the present invention in the motor 200 of the multi cylinders such as such as automobile.In addition, motor 200 is examples of " internal-combustion engine " of the present invention.
As shown in Figure 4, the motor 200 of the 2nd mode of execution is the petrol engine of 4 cylinders in upright arrangement.In the cylinder block 101 of motor 200,4 cylinders 103 arrange with straight line shape on the bearing of trend (Y-direction) of bent axle.
The water jacket 104 of the 2nd mode of execution is integrally formed in cylinder block 101 in the mode of the periphery surrounding 4 cylinders 103 respectively.That is, water jacket 104 with complete cycle surround the periphery of independent cylinder 103 mode arrange.Therefore, the passage portion 132 (with reference to Fig. 5) at the circumferential interpenetrating walls portions 131 of cylinder 103 is formed in the wall portion 131 between each cylinder 103.In addition, water jacket 104 has supplying mouth 143 and exhaust port 144 respectively by 4 cylinders 103 each.
In addition, in a same manner as in the first embodiment, cooling water guide portion 106 is integrally formed in dividing plate 105.As shown in Figure 5, dividing plate 105 is also configured in the inside of passage portion 132, dividing plate 105 with complete cycle surround the periphery of each cylinder 103 mode be provided with multiple (4).Therefore, as shown in Figure 4, dividing plate 105, such as by one dividing into three, comprises the 1st parts 151 and the 2nd parts 152 of the periphery of the cylinder 103 surrounded except passage portion 132; And the 3rd parts 153 be inserted in passage portion 132.In this case, the 3rd parts 153 be inserted in passage portion 132 become shared between adjacent cylinder 103, are provided with the 1st parts 151 and the 2nd parts 152 by each cylinder 103.
As shown in Figure 5, cooling water guide portion 106 comprises guide plate 161, is guided by cooling water in the periphery flowing mode of more than 1 week along cylinder 3.In addition, guide plate 161 is examples of " cooling water guide plate " of the present invention.
In the part being configured in passage portion 132 in cooling water guide portion 106, be formed with guide plate 161 in the both sides of the 3rd parts 153.Namely, 3rd parts 153 of dividing plate 105 are configured in the central authorities of radial direction (Y-direction) in passage portion 132, in the 3rd parts 153, guide plate 161 is formed in the mode outstanding towards (each cylinder 103 towards adjacent) outside two of radial direction.Be formed at sheet part 161a in the guide plate 161 of the 3rd parts 153, Y1 side and form the part being located at the cooling water guide portion 106 of the cylinder 103 of Y1 side.The sheet part 161b of Y2 side forms the part being located at the cooling water guide portion 106 of the cylinder 103 (adjacent cylinder) of Y2 side.In addition, the shape of guide plate 161 is identical with above-mentioned 1st mode of execution.Thus, in the 2nd mode of execution, also in the same manner as above-mentioned 1st mode of execution, the sheet interval D b that guide plate 161 is configured between axial guide plate 161 becomes large along with tending to lower dead centre side (X2 side) from upper dead center side (X1 side) gradually.
By this formation, in the motor 200 of the 2nd mode of execution, surround water jacket 104 and the cooling water guide portion 106 of the periphery of cylinder 103 respectively with being provided with complete cycle for 4 cylinders 103.Further, cooling water supplies in respective water jacket 104 from 4 supplying mouths 43, and cooled water guide portion 106 guides and flow more than 1 week in periphery along each cylinder 103.In addition, as shown in Figure 4, when forming water jacket 104 in the mode of the complete cycle surrounding cylinder 103, water jacket 104 itself also can be connected mutually, also can arrange individually by each cylinder 103.When water jacket 104 is connected mutually, as long as divide stream 6a by each cylinder 103 respectively by the dividing plate 105 (cooling water guide portion 106) of the inside being configured in water jacket 104.
And the stream 6a be made up of cooling water guide portion 106 also partly can be connected with adjacent stream 6a in water jacket 104.As long as formed the flowing of more than 1 week of the periphery along each cylinder 103 by cooling water guide portion 106, also partly can converge with the flowing of the cooling water of adjacent cylinder 103.
In addition, other formation of the motor 200 of the 2nd mode of execution is identical with above-mentioned 1st mode of execution.
As the 2nd mode of execution, when arranging multiple cylinder 103, also can obtain the effect same with above-mentioned 1st mode of execution.That is, in the 2nd mode of execution, the cooling water to the internal feed of water jacket 104 can be made at least to circulate 1 week in the circumference of each cylinder 103, therefore can cool equably on the complete cycle of each cylinder 3.Thus, the temperature of the circumference of each cylinder 3 can be suppressed irregular by the uniform cooling of the circumference of cylinder 103.Consequently, the thermal expansion of the circumference of each of multiple cylinder 103 achieves homogenization, not easily causes the deterioration of circularity, therefore can realize the suppression of fuel consumption.
In addition, in the 2nd mode of execution, with complete cycle surround the periphery of independent cylinder 103 mode water jacket 104 is set.Thus, different from the situation arranging water jacket in the mode of surrounding multiple cylinder in the lump, even the motor of multi cylinder 200, also each cylinder 103 can be cooled individually.Consequently, can carry out each of each cylinder 103 evenly cooling.
Other effect of 2nd mode of execution is identical with above-mentioned 1st mode of execution.
In addition, should think that this time disclosed mode of execution is illustrate but not restricted contents in whole.Scope of the present invention is not by the explanation of above-mentioned mode of execution but is represented by claim, also comprises all changes (variation) in the implication and scope that are equal to claim.
Such as, in above-mentioned 1st mode of execution, the single cylinder engine 100 with 1 cylinder 3 is shown, multi cylinder (4 cylinder) motor 200 with 4 cylinders 103 has been shown in above-mentioned 2nd mode of execution, but has the present invention is not limited thereto.In the present invention, also can be the motor of more than 2 cylinders beyond single cylinder and 4 cylinders or 3 cylinders, 5 cylinders.
In addition, in above-mentioned 1st mode of execution, show example cylinder block 1 and cylinder head 2 being integrally formed in structure 100a, but the present invention is not limited thereto.In the present invention, also can be split cylinder block 1 and cylinder head 2 are set.In this case, water jacket also can be the opened water nested structure of water jacket to axially end face (with the junction plane of the cylinder head) opening of cylinder block, also can be the closed-up water nested structure of not opening.But, when split cylinder block and head is set, need across packing ring (sealed member), cylinder block and head to be combined securely at junction plane.Therefore, usually need the flange part arranging heavy wall around the junction plane of cylinder block and head, flange part firmly is combined, and the cooling performance therefore near junction plane reduces.When forming cylinder block and head, without the need to arranging packing ring or flange part, the cooling performance near the border therefore improving cylinder block and cylinder head.
In addition, in the above-mentioned 1st and the 2nd mode of execution, show the example arranged across hole wall 35 dry cylinder liner 32 adjacent with water jacket 4, but the present invention is not limited thereto.In the present invention, also can wet cylinder liner be set.
In addition, in the above-mentioned 1st and the 2nd mode of execution, show the example that cooling water guide portion 6 guide cooling water flows several weeks along the periphery of cylinder 3, but the present invention is not limited thereto.In the present invention, as long as cooling water guide portion guide cooling water flows more than 1 week along the periphery of cylinder.That is, the dish of cooling water number of turn-taking also can be how week of more than 1 week.In addition, the dish of cooling water number of turn-taking also can be 1 week Ban etc.
In addition, in the above-mentioned 1st and the 2nd mode of execution, show the example guide plate 61 of tabular being located at cooling water guide portion 6, but the present invention is not limited thereto.Such as, as cooling water guide portion, also can be formed at water jacket partition place inside radial direction with the concave part of semicircle shape depression, form the stream divided by the outer circumferential face (inner peripheral surface of water jacket) of concave part and cylinder.
In addition, in above-mentioned 1st mode of execution, show and become from trend lower dead centre side, upper dead center side the example that large mode makes sheet interval D b change continuously with sheet interval D b gradually, but the present invention is not limited thereto.In the present invention, also can make that sheet interval D b is discontinuous periodically to be changed.
In addition, in the above-mentioned 1st and the 2nd mode of execution, show and the distance Da between the inner side surface 53 of dividing plate 5 and the outer circumferential face of cylinder 3 is set to constant example, but the present invention is not limited thereto.In the present invention, also distance Da between the inner side surface 53 of dividing plate 5 and the outer circumferential face of cylinder 3 can be changed according to axial position.
Such as, the 1st variation is as shown in Figure 6 such, also can be configured to, make the distance Da between the inner side surface 53 of dividing plate 205 and the outer circumferential face of cylinder 3 tend to lower dead centre side (X2 side) from upper dead center side (X1 side) and become large gradually.In the cooling water guide portion 206 of the 1st variation, the wall thickness of the radial direction of dividing plate 205 tends to lower dead centre side and diminishes gradually, and thus, distance Da is configured to along with becoming large gradually from trend lower dead centre side, upper dead center side.Consequently, can obtain and in the above-mentioned 1st and the 2nd mode of execution, make the sheet interval D b between guide plate 61 tend to lower dead centre side from upper dead center side and become effect same greatly gradually.That is, the flowing path section area (Da × Db) of stream 6a is along with trend lower dead centre side and become large gradually, therefore can make the flow velocity of cooling water along with trend side, dead point step-down gradually.
In addition, also both formations that the 1st variation changes sheet interval D b according to axial position like that according to formation and the above-mentioned 1st and the 2nd mode of execution of axial position change distance Da like that can be applied to cooling water guide portion.That is, make the distance Da between the inner side surface 53 of dividing plate 5 and the outer circumferential face of cylinder 3 tend to lower dead centre side (X2 side) and become large gradually, and make the sheet interval D b between guide plate 61 tend to lower dead centre side and become large gradually.If formed like this, then between upper dead center side and lower dead centre side, the flow velocity of cooling water can be changed larger.Consequently, the degrees of freedom in the design of the velocity optimization for making cooling water according to the axial position of cylinder can be improved.
In addition, in the above-mentioned 1st and the 2nd mode of execution, show example cooling water guide portion 6 being integrally formed in dividing plate 5, but the present invention is not limited thereto.In the present invention, the 2nd variation is as shown in Figure 7 such, and cooling water guide portion 306 and cylinder 303 also can be made to form.In the 2nd variation, the guide plate 361 of cooling water guide portion 306 is arranged integratedly with the mode of giving prominence to from the outer circumferential face (hole wall 35) of cylinder 303 and cylinder 303.On the other hand, dividing plate 305 does not arrange guide plate.The inner side surface 53 that guide plate 361 is configured to front end and dividing plate 305 is adjacent to.Therefore, in cooling water guide portion 6, form the stream 6a divided by guide plate 361, the inner side surface 53 of dividing plate 305 and the inner peripheral surface 41 of water jacket 4 under axially.In addition, guide plate 361 is examples of " cooling water guide plate " of the present invention.Even if form like this, the effect same with above-mentioned 1st mode of execution and the 2nd mode of execution also can be obtained.In addition, in the present invention, also cooling water guide portion and water jacket partition split can be formed.
Claims (5)
1. an internal-combustion engine, is characterized in that, possesses:
Cylinder;
Water jacket, it is formed in the mode of the periphery surrounding above-mentioned cylinder; And
Cooling water guide portion, it is configured in above-mentioned water jacket, and guide cooling water flows more than 1 week along the periphery of above-mentioned cylinder.
2. internal-combustion engine according to claim 1,
Above-mentioned cooling water guide portion comprises the periphery extension cooling water guide plate of more than 1 week along above-mentioned cylinder,
Above-mentioned cooling water guide plate is that the periphery obliquely along above-mentioned cylinder between the upper dead center side and lower dead centre side of above-mentioned cylinder extends and formed.
3. internal-combustion engine according to claim 2,
Above-mentioned cooling water guide plate is formed in the following manner: the interval between the above-mentioned cooling water guide plate axially of above-mentioned cylinder becomes large along with tending to above-mentioned lower dead centre side from above-mentioned upper dead center side gradually.
4. the internal-combustion engine according to Claims 2 or 3,
Above-mentioned water jacket has the supplying mouth of the cooling water of the upper dead center side being located at above-mentioned cylinder and is located at the exhaust port of lower dead centre side of above-mentioned cylinder,
Above-mentioned cooling water guide plate is formed in the following manner: make the cooling water that supplies from above-mentioned supplying mouth within more than 1 week, be directed to above-mentioned exhaust port along the periphery flowing of above-mentioned cylinder.
5. the internal-combustion engine according to any one in Claims 1 to 4,
Above-mentioned water jacket with complete cycle surround the periphery of independent above-mentioned cylinder mode arrange.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-136115 | 2014-07-01 | ||
| JP2014136115A JP2016014338A (en) | 2014-07-01 | 2014-07-01 | Internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105275656A true CN105275656A (en) | 2016-01-27 |
Family
ID=53510619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510369822.1A Pending CN105275656A (en) | 2014-07-01 | 2015-06-29 | Internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2963274A1 (en) |
| JP (1) | JP2016014338A (en) |
| CN (1) | CN105275656A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278454A (en) * | 2020-09-27 | 2022-04-05 | 深圳臻宇新能源动力科技有限公司 | Water jacket spacer, cooling device and engine |
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|---|---|---|---|---|
| US2417448A (en) * | 1944-11-25 | 1947-03-18 | Rouy Auguste Louis Mar Antoine | Cooling an internal-combustion engine |
| DE2725059A1 (en) * | 1977-06-03 | 1978-12-14 | Kloeckner Humboldt Deutz Ag | Cylinder guide sleeve for IC engine - has extension with surrounding support ring containing water cooling passages |
| US4667635A (en) * | 1984-11-23 | 1987-05-26 | K/o/ ckner-Humboldt-Deutz AG | Helical spring forming cooling channel around liquid-cooled cylinder |
| DE3629671A1 (en) * | 1986-09-01 | 1988-03-10 | Kloeckner Humboldt Deutz Ag | Internal combustion engine with liquid-cooled cylinder liner |
| US6223702B1 (en) * | 1998-04-25 | 2001-05-01 | Daimlerchrysler Ag | Internal combustion engine |
| EP1227236A3 (en) * | 2001-01-20 | 2003-01-22 | Bayerische Motoren Werke Aktiengesellschaft | Crankcase for a liquid cooled piston combustion engine |
| DE102009023332A1 (en) * | 2009-05-29 | 2011-01-20 | Daimler Ag | Cylinder crankcase for turbocharger utilized for engine, has cylinder bore and cylinder liner, where cylinder liner is fastened in crankcase by friction welding seam and consists of grey cast iron or hypereutectic aluminum silicon alloy |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5588902B2 (en) | 2011-03-25 | 2014-09-10 | ニチアス株式会社 | Cylinder bore wall thermal insulation structure, cylinder bore wall thermal insulation method, internal combustion engine and automobile |
-
2014
- 2014-07-01 JP JP2014136115A patent/JP2016014338A/en active Pending
-
2015
- 2015-06-23 EP EP15173376.3A patent/EP2963274A1/en not_active Withdrawn
- 2015-06-29 CN CN201510369822.1A patent/CN105275656A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2417448A (en) * | 1944-11-25 | 1947-03-18 | Rouy Auguste Louis Mar Antoine | Cooling an internal-combustion engine |
| DE2725059A1 (en) * | 1977-06-03 | 1978-12-14 | Kloeckner Humboldt Deutz Ag | Cylinder guide sleeve for IC engine - has extension with surrounding support ring containing water cooling passages |
| US4667635A (en) * | 1984-11-23 | 1987-05-26 | K/o/ ckner-Humboldt-Deutz AG | Helical spring forming cooling channel around liquid-cooled cylinder |
| DE3629671A1 (en) * | 1986-09-01 | 1988-03-10 | Kloeckner Humboldt Deutz Ag | Internal combustion engine with liquid-cooled cylinder liner |
| US6223702B1 (en) * | 1998-04-25 | 2001-05-01 | Daimlerchrysler Ag | Internal combustion engine |
| EP1227236A3 (en) * | 2001-01-20 | 2003-01-22 | Bayerische Motoren Werke Aktiengesellschaft | Crankcase for a liquid cooled piston combustion engine |
| DE102009023332A1 (en) * | 2009-05-29 | 2011-01-20 | Daimler Ag | Cylinder crankcase for turbocharger utilized for engine, has cylinder bore and cylinder liner, where cylinder liner is fastened in crankcase by friction welding seam and consists of grey cast iron or hypereutectic aluminum silicon alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278454A (en) * | 2020-09-27 | 2022-04-05 | 深圳臻宇新能源动力科技有限公司 | Water jacket spacer, cooling device and engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2963274A1 (en) | 2016-01-06 |
| JP2016014338A (en) | 2016-01-28 |
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Application publication date: 20160127 |