EP0750099A2 - Boîtier d'un thermostat pour un moteur à combustion interne - Google Patents

Boîtier d'un thermostat pour un moteur à combustion interne Download PDF

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Publication number
EP0750099A2
EP0750099A2 EP96109824A EP96109824A EP0750099A2 EP 0750099 A2 EP0750099 A2 EP 0750099A2 EP 96109824 A EP96109824 A EP 96109824A EP 96109824 A EP96109824 A EP 96109824A EP 0750099 A2 EP0750099 A2 EP 0750099A2
Authority
EP
European Patent Office
Prior art keywords
oil
cooling water
thermostat housing
thermostat
flange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96109824A
Other languages
German (de)
English (en)
Other versions
EP0750099A3 (fr
EP0750099B1 (fr
Inventor
Haruyo C/O Isuzu Motors Limited Kimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Isuzu Motors Ltd
Original Assignee
Isuzu Motors Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Isuzu Motors Ltd filed Critical Isuzu Motors Ltd
Publication of EP0750099A2 publication Critical patent/EP0750099A2/fr
Publication of EP0750099A3 publication Critical patent/EP0750099A3/fr
Application granted granted Critical
Publication of EP0750099B1 publication Critical patent/EP0750099B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—Cooling
    • 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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • F01M2001/105—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements
    • F01M2001/1092—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements comprising valves bypassing the filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F01M2011/031—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means
    • F01M2011/033—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means comprising coolers or heat exchangers
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler

Definitions

  • This invention relates to a thermostat housing for an internal combustion engine. More particularly, the present invention relates to a thermostat housing for an internal combustion engine which can be assembled integrally with an oil cooler, an oil filter, and so forth.
  • a thermostat housing, an oil cooler and an oil filter each require external pipings for causing necessary cooling water and oil to flow between their devices and the engine main body and between the oil cooler and the oil filter, and for this reason, the space for a cooling water system and an oil system to be assembled outside the engine main body becomes wide.
  • an oil cooler equipped with an oil filter which is an integrated unit of an oil filter and an oil cooler, is certainly helpful to reduce the installation space, as described, for example, in Japanese Utility Model Laid-Open No. 102413/1989.
  • a further reduction of the installation space is necessary in order to realize a compact and high performance internal combustion engine.
  • the object of the present invention is to provide a thermostat housing for an internal combustion engine which can reduce the installation space and can improve the maintainability by integrally assembling an oil cooler or an oil filter with a thermostat housing.
  • a thermostat housing for an internal combustion engine employing the construction wherein a first flange for fitting a thermostat housing to an engine main body and a second flange for fitting an oil cooler or an oil filter are formed on the thermostat housing accommodating a thermostat for cooling water, the first flange and the second flange are arranged at different positions at which the extension surfaces of their flange surfaces cross each other, and at least one oil passage communicating with the oil cooler or with the oil filter is formed on the thermostat housing.
  • the oil cooler and the oil filter can be assembled integrally with each other and this assembly can be fitted to the thermostat housing.
  • the oil flow passage formed on the thermostat housing can be opened to the first flange surface and to the second flange surface described above.
  • a cooling water lead-in passage and a cooling water lead-out passage are formed in the thermostat housing.
  • at least two cooling water lead-in passages are formed in such a fashion that one of them communicates with a cooling water jacket of the engine main body and the other, with a water passage for communication of the cooling water jacket with a radiator, a cooling water gallery communicating with the cooling water outlet side of the thermostat is formed in the thermostat housing, and a cooling water lead-out passage communicating with at least the cooling water pump suction side is formed in this cooling water gallery.
  • the thermostat housing can be made of an aluminum alloy.
  • the aluminum alloy has a high heat transfer coefficient, when the oil passage and cooling water lead-out passage are arranged near to each other in the thermostat housing, the oil is cooled at the place where they are adjacent to each other. In this way, the thermostat housing can be allowed to function as an auxiliary oil cooler.
  • thermostats such as a bottom bypass type, a side bypass type, etc, using an oil pellet which has been conventionally used, can be used as the thermostat described above.
  • oil coolers can be used as the oil cooler described above such as a water cooling type oil cooler and an air cooling type oil cooler in terms of the cooling system, and a tubular type and a stack type in terms of the structure.
  • the oil filter may be of a conventional type such that the filter paper is shaped into a cylinder so as to enlarge the filtration area.
  • the means for forming the first flange for fitting the thermostat housing to the engine main body and the second flange for fitting the oil cooler or the oil filter in such a fashion that the extension surfaces of their flange surfaces cross each other, and for forming at least one oil flow passage communicating with the oil cooler or the oil filter in the thermostat housing, is allowed to function in the following way.
  • the thermostat housing is allowed to function as a bracket for fitting the oil cooler or the oil filter and the oil pipings thereto so as to reduce the installation space to the engine main body, the size of the engine main body, the space for the external piping of the engine main body, and the number of necessary components. Moreover, because the maintenance work of the thermostat, the oil filter, etc, can be carried out at the same position, the efficiency of the work can be improved.
  • the means for opening the oil passages, formed in the thermostat housing, to the first flange surface and to the second flange surface makes it possible to simultaneously carry out fitting of the apparatuses and the piping work. Therefore, the number of components of the pipings can be reduced and the efficiency of the assembly work can be improved.
  • the means for forming two oil passages in the thermostat housing so as to use one of them as a passage for leading at least a part of the pressurized oil supplied from the oil pump to the oil cooler or to the oil filter and the other as a passage for leading at least a part of the oil flowing out of the oil cooler or the oil filter to the engine main body can further reduce the number of components and can improve the efficiency of the assembly work.
  • the means for forming at least two cooling water lead-in passages so as to allow one of them to communicate with the cooling water jacket of the engine main body and the other with the water passage which in turn communicates with the cooling water jacket and the radiator, for forming the cooling water gallery communicating with the cooling water outlet side of the thermostat, and for allowing this cooling water gallery to communicate with at least the cooling water pump suction side, can reduce the number of components of the cooling water piping and can improve the efficiency of the assembly work.
  • the means for disposing the oil passage and the cooling water lead-out passage in such a manner as to be adjacent to each other in the thermostat can allow the thermostat housing to function as the oil cooler.
  • the thermostat housing is made of an aluminum alloy having a high heat transfer coefficient, the thermostat housing can be allowed to function as the oil cooler.
  • cooling water discharged from a cooling water pump 2 fitted to a fan shaft (not shown) inside an internal combustion engine cools the inside of an engine main body 3, then branches into an external piping a for a thermostat housing 4 of the engine main body 3, an external piping b for a radiator 4 and an external piping c for an oil cooler 6, flows through a return external piping a' for the thermostat housing 4, a return external piping b' for the radiator 5 and a return external piping c' for the oil cooler 6, and is sent back to the cooling water pump 2.
  • cooling water is distributed to a heater for air-conditioning, a turbo charger, an injection pump, etc, besides the members described above, Fig. 1 shows only the basic cooling water system.
  • the oil sent from an oil pump 7 fitted to a crank shaft (not shown) is sent to the oil cooler 6 through an external piping ⁇ , then sent to an oil filter 8 through an external piping ⁇ , next sent to an oil gallery (not shown) disposed in the engine main body 3 through an external piping ⁇ , sent back to an oil pan 9 after lubricating and cooling part of the engine and is again sucked into the oil pump.
  • thermostat (not shown) and the oil filter 6 are components which need maintenance, a space for the maintenance operation must be secured when their installation space is secured. In other words, they exert great influences on the layout of other components. As the system becomes greater in scale, the number of necessary components increases, too, and the problems such as the increase of the cost and the drop of the working efficiency at the time of maintenance occur.
  • thermostat housing according to Embodiment 1 of the present invention shown in Figs. 2 and 3 can reduce the number of external pipings round the internal combustion engine and the number of components connected to them, and can improve the maintainability, as will be explained below.
  • a first flange F to be fitted to the engine main body 3 and a second flange G to be fitted to the oil cooler 6 are formed.
  • the first flange F and the second flange G are formed in such a fashion that their faces orthogonally cross each other (see Figs. 4 and 7).
  • the first flange F is fitted to a flange F' on the engine side which is formed on a cylinder body 10, while a flange G' on the oil side of the oil cooler 6 is fitted to the second flange G.
  • the angle described above can be set to an arbitrary angle other than the right angle.
  • the oil filter 8 is fitted to the oil cooler 6 so that the thermostat housing 4, the oil cooler 6 and the oil filter 8 can be integrally assembled.
  • the oil cooler 6 used in Embodiment 1 is a conventional oil cooler which uses a cylindrical stack type water cooling type cooler element, and the oil filter 8 is also a conventional oil filter using a filter element obtained by cylindrically shaping the filter paper.
  • Bolt holes 11 shown in Fig. 2 are used for fastening the first flanges F and F'.
  • Fastening of the second flanges G and G' and fastening of the oil cooler 6 and the oil filter 8 are achieved by meshing one stud bolt 12, which has a through-hole bored therein for the passage of the oil, with a female screw 12a (Fig. 12) bored at an open portion of an oil flow passage ⁇ '' and a female screw (not shown) bored at an oil outlet of the oil filter 8.
  • Embodiment 1 uses the fundamentally the same system explained with reference to Fig. 1. Therefore, same reference numerals are used and the repetition of explanation will be omitted.
  • the thermostat housing 4 of Embodiment 1 is produced by aluminum alloy casting, and its outline will be explained, by contrasting Fig. 2 showing the assembling step with Fig. 3 showing the system section.
  • the cooling water outlet J' and the cooling water inlet K' of the engine main body 3 used in this Embodiment 1 are opened in the proximity of the engine side flange F', and the oil outlet L' and the oil inlet M' are opened in the proximity of the engine side flange F' surface.
  • the cooling water outlet J' communicates with the cooling water passage 15 through which the cooling water pump 2 fitted inside the engine main body 3 circulates cooling water to the cylinder body 10, while the cooling water inlet K' communicates with the suction side of the cooling water pump 2.
  • the cooling water outlet J' communicates with the cooling water inlet J of the oil cooler 6 through the external piping c.
  • the oil outlet L' opening to the engine main body 3 communicates with the discharge side of the oil sucked from the oil pan 9 by the oil pump 7 fitted inside the engine main body 3.
  • the oil inlet M' communicates with the oil gallery (not shown) of the cylinder body 10 through the oil flow passage ⁇ ' formed inside the engine main body 3.
  • cooling water flowing out of the cooling water outlet N' of the cylinder head 14 branches into the external piping a which bypasses the radiator 5 and the external piping b communicating with the radiator 5.
  • the external piping a communicates with the cooling water inlet N of the thermostat housing 4, and the return external piping b' from the radiator 5 communicates with the cooling water inlet P of the thermostat housing 4.
  • the cooling water outlet Q of the oil cooler 6 communicates with the cooling water inlet R of the thermostat housing 4 through the external piping d.
  • the cooling water outlet Q and the cooling water inlet R can be connected in advance by fastening the second flange G and the oil cooler side flange G'.
  • an external piping e (not shown in Fig. 2) for supplying cooling water to the heater 16 for air-conditioning is branched from the external piping a communicating with the cooling water outlet N' of the cylinder head 4, and its return external piping e' communicates with the cooling water inlet S of the thermostat housing 4.
  • radiator bypass cooling water (cooling water after cooling the engine) supplied to the cooling water inlet N of the thermostat housing 4 and radiator outlet cooling water supplied to the cooling water inlet P are supplied to the thermostat 17.
  • a bottom bypass type thermostat one of the valves of which moves in a closing direction when the other of which moves in an opening direction is used as this thermostat 17.
  • the thermostat chamber 18 communicates with the cooling water gallery 19 inside the thermostat housing. Therefore, cooling water flowing into the thermostat chamber 18 flows in a direction indicated by arrows in Fig. 11, joins cooling water flowing from the cooling water inlet R (cooling end water of the oil cooler 6) and from the cooling water inlet S (water out of the heater 16 for air conditioning ) (see Figs. 10 and 11).
  • the confluent cooling water flowing out from the cooling water outlet K is supplied to the cooling water inlet K' opening to the engine main body 3 through an external piping a', and sent back to the cooling water pump 2.
  • the oil supplied from the oil pump 7 flows through the oil flow passage ⁇ ' inside the engine main body 3, the oil outlet L', the oil inlet L the oil flow passage ⁇ '' inside the thermostat housing 4, and supplied to the oil cooler 6 through a ring-like groove 22 made in the flange G.
  • the oil leaving the cooler element 6a is supplied through the oil flow passage ⁇ '' to the oiler filter 8.
  • the oil thus supplied to the oil filter 8 is filtrated by the filter element 8a, then flows through the oil flow passage ⁇ '', the oil outlet M', the oil inlet M' and the oil flow passage ⁇ ' (see Fig. 3) inside the engine main body 3, and supplied to the oil gallery (not shown) inside the engine main body 3.
  • the openings of the outlets/inlets of cooling water and oil of the thermostat housing 4 face towards various directions. These directions are determined by the overall layout of the engine, and the positional relation of each opening other than the first and second flanges F and G change depending on the given situation.
  • the thermostat housing 4 is ordinarily produced by aluminum alloy casting and has a complicated outer shape so as to reduce its thickness.
  • the bottom bypass type thermostat 17 is fitted to the cooling water inlet P as shown in Fig. 9.
  • the thermostat 17 is fitted to the flange 25 of the cooling water inlet P fixed to a valve seat 24 having a valve port 23a by a bracket 17a, an attachment 26 of the external piping b' is put on the former from outside, and the thermostat 17 is then fastened by a bolt (not shown).
  • Two valves 17b and 17c move back and forth with expansion and contraction of the wax (not shown) filled in the thermostat main body 17d and open and close the valve ports 23a and 23b.
  • the valve port 23a moves to the closing side while the valve port 23b moves to the opening side (to the state shown in Fig. 9) by the action of the valves 17b, and 17c; and when the cooling water temperature from the cooling water inlet N is higher than the set temperature, the valve port 23a moves to the opening side whereas the valve port 23b moves to the closing side.
  • Cooling water flowing into the thermostat chamber 18 flows then into the cooling water gallery 19 as shown in Fig. 11, joins cooling water flowing from the cooling water inlets R and S (see Fig. 10), and flows out from the cooling water outlet K.
  • the oil flows through the oil flow passage ⁇ '' from the oil inlet L opening in the first flange F, flows then to the ring-like groove 22 opening in the second flange G and thereafter flows towards the oil cooler (not shown).
  • the oil fed back from the oil cooler side flows through the oil flow passage ⁇ '' and flows out from the oil outlet M of the first flange F towards the engine main body (not shown).
  • a stud bolt 12 is screwed to the oil outlet 8b of the oil filter 8 in such a manner as to screwed into the oil flow passage ⁇ '' of the thermostat housing 4.
  • Same reference numerals are used to identify same constituent members at this portion, and other portions not shown are the same as those of Embodiment 1 with the exception of the portions which are changed due to removal of the oil cooler 6, and their explanation will be omitted.
  • thermostat housing for the internal combustion engine according to the present invention achieves the following effects.
EP96109824A 1995-06-23 1996-06-19 Boítier d'un thermostat pour un moteur à combustion interne Expired - Lifetime EP0750099B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP15818495 1995-06-23
JP158184/95 1995-06-23
JP15818495A JPH0913935A (ja) 1995-06-23 1995-06-23 内燃機関用サーモスタットハウジング

Publications (3)

Publication Number Publication Date
EP0750099A2 true EP0750099A2 (fr) 1996-12-27
EP0750099A3 EP0750099A3 (fr) 1997-09-10
EP0750099B1 EP0750099B1 (fr) 2001-12-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP96109824A Expired - Lifetime EP0750099B1 (fr) 1995-06-23 1996-06-19 Boítier d'un thermostat pour un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0750099B1 (fr)
JP (1) JPH0913935A (fr)
DE (1) DE69618084T2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0926322A3 (fr) * 1997-12-24 2000-12-06 Isuzu Motors Limited Circuit de refroidissement de l'eau pour moteurs à combustion interne
DE10012461A1 (de) * 2000-03-15 2001-09-20 Mahle Filtersysteme Gmbh Flüssigkeitsfilter, insbesondere Ölfilter
EP1362993A1 (fr) * 2002-05-15 2003-11-19 Dana Automotive Limited Système de lubrification pour moteur à combustion
CN103147819A (zh) * 2013-02-25 2013-06-12 隆鑫通用动力股份有限公司 发动机机油冷却结构总成及其发动机
CN103939175A (zh) * 2014-04-01 2014-07-23 赵军 一种风冷柴油发动机的润滑油散热装置
CN106437930A (zh) * 2016-09-20 2017-02-22 北京汽车股份有限公司 用于发动机的机油换热系统及具有其的车辆
EP3342993A1 (fr) * 2016-12-28 2018-07-04 Kubota Corporation Moteur

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4729535B2 (ja) * 2007-05-28 2011-07-20 本田技研工業株式会社 内燃機関用流路構造体
KR101013961B1 (ko) * 2007-12-14 2011-02-14 기아자동차주식회사 자동차 엔진의 냉각수 순환회로
US8375917B1 (en) 2009-07-23 2013-02-19 Gene Neal Engine oil cooler
CN106437938A (zh) * 2016-12-26 2017-02-22 重庆小康工业集团股份有限公司 集成式机油滤清器安装座
CN106593574A (zh) * 2016-12-26 2017-04-26 重庆小康工业集团股份有限公司 具有止回阀的机油过滤组件

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2898896A (en) * 1955-11-21 1959-08-11 Gen Motors Corp Heat exchanger means
US4032068A (en) * 1975-04-08 1977-06-28 Thermo Valve Corporation Thermostatic valve
DE4211896A1 (de) * 1992-04-09 1993-10-14 Daimler Benz Ag Gehäusedeckel für eine Brennkraftmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2898896A (en) * 1955-11-21 1959-08-11 Gen Motors Corp Heat exchanger means
US4032068A (en) * 1975-04-08 1977-06-28 Thermo Valve Corporation Thermostatic valve
DE4211896A1 (de) * 1992-04-09 1993-10-14 Daimler Benz Ag Gehäusedeckel für eine Brennkraftmaschine

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0926322A3 (fr) * 1997-12-24 2000-12-06 Isuzu Motors Limited Circuit de refroidissement de l'eau pour moteurs à combustion interne
DE10012461A1 (de) * 2000-03-15 2001-09-20 Mahle Filtersysteme Gmbh Flüssigkeitsfilter, insbesondere Ölfilter
WO2001069050A3 (fr) * 2000-03-15 2001-12-06 Mahle Filtersysteme Gmbh Filtre pour liquide, notamment filtre a huile
US6833066B2 (en) 2000-03-15 2004-12-21 Mahle Filtersysteme Gmbh Liquid filter, especially oil filter
EP1362993A1 (fr) * 2002-05-15 2003-11-19 Dana Automotive Limited Système de lubrification pour moteur à combustion
US7036480B2 (en) 2002-05-15 2006-05-02 Dana Automotive Limited Engine lubrication system
CN103147819A (zh) * 2013-02-25 2013-06-12 隆鑫通用动力股份有限公司 发动机机油冷却结构总成及其发动机
CN103939175A (zh) * 2014-04-01 2014-07-23 赵军 一种风冷柴油发动机的润滑油散热装置
CN106437930A (zh) * 2016-09-20 2017-02-22 北京汽车股份有限公司 用于发动机的机油换热系统及具有其的车辆
EP3342993A1 (fr) * 2016-12-28 2018-07-04 Kubota Corporation Moteur
CN108252764A (zh) * 2016-12-28 2018-07-06 株式会社久保田 发动机
US10837328B2 (en) 2016-12-28 2020-11-17 Kubota Corporation Engine
CN108252764B (zh) * 2016-12-28 2021-12-14 株式会社久保田 发动机

Also Published As

Publication number Publication date
DE69618084D1 (de) 2002-01-31
EP0750099A3 (fr) 1997-09-10
DE69618084T2 (de) 2002-06-13
EP0750099B1 (fr) 2001-12-19
JPH0913935A (ja) 1997-01-14

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