EP1258608B1 - Brennkraftmaschine mit einem Kühlwasserkanaldeckel - Google Patents

Brennkraftmaschine mit einem Kühlwasserkanaldeckel Download PDF

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Publication number
EP1258608B1
EP1258608B1 EP02009169A EP02009169A EP1258608B1 EP 1258608 B1 EP1258608 B1 EP 1258608B1 EP 02009169 A EP02009169 A EP 02009169A EP 02009169 A EP02009169 A EP 02009169A EP 1258608 B1 EP1258608 B1 EP 1258608B1
Authority
EP
European Patent Office
Prior art keywords
cooling water
outlet
cover
engine
mount
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.)
Expired - Fee Related
Application number
EP02009169A
Other languages
English (en)
French (fr)
Other versions
EP1258608A2 (de
EP1258608A3 (de
Inventor
Kouji Yoshino
Yutaka Amakawa
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP1258608A2 publication Critical patent/EP1258608A2/de
Publication of EP1258608A3 publication Critical patent/EP1258608A3/de
Application granted granted Critical
Publication of EP1258608B1 publication Critical patent/EP1258608B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • 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
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • 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
    • F01P2060/08—Cabin heater

Definitions

  • This invention relates to an engine having a cooling water inlet/outlet cover to be attached to an engine body, which includes an inflow path for guiding cooling water from a radiator into a cooling water inlet formed in the engine body to communicate with a thermostat, and an outflow path for guiding cooling water out of an outlet formed in the engine body to the radiator.
  • the thermostat cover fixed on one side surface of cylinder head covers the outlet of a cooling water path formed in the cylinder head and a thermostat-type path opening/closing mechanism accommodated in an accommodating chamber defined by the cylinder head to permit cooling water to flow back to a radiator.
  • the thermostat cover defines a cooling water entrance opening connected for connection of a radiator hose for guiding cooling water from the radiator, and a cooling water exit opening for connection of a radiator hose for guiding cooling water back to the radiator.
  • a cooling water hose is connected to another side surface of the cylinder head to supply cooling water from the water jacket of the cylinder head to an air-conditioning heater core.
  • the thermostat cover integrally defines both the cooling water exit opening and the cooling water entrance opening and therefore it is certainly effective for reduce parts and assembling steps.
  • the cooling hose connected to the heater core is connected to the side surface of the cylinder head different from the side surface for mounting the thermostat cover, it results in locating cooling water outlets in separated positions of the cylinder head, and results in inefficiency of the hose connecting work.
  • the prior art therefore had the room for improvement from the viewpoint of assembly of the engine.
  • the separate locations of outlets prevented a satisfactory decrease in the number of parts and assembling steps.
  • a further object of the invention is to prevent a liquid packing from spoiling an elastic material packing when using the liquid packing as a seal member between the engine body and a thermostat cover in addition to the elastic material packing.
  • the invention provides an engine having a cooling water inlet/outlet cover provided on and affixed to one side surface of an engine body to cover cooling water inlet and outlet formed in the engine body, the cover including a first cover portion and a second cover portion, wherein the first cover portion covers the inlet and defines an inflow path communicating with a thermostat-type path opening/closing mechanism to introduce cooling water from a radiator, and the second cover portion covers the outlet, characterized in that the outlet including a first outlet and a second outlet, and the second cover portion is formed with a first outflow path which guides cooling water from the first outlet to the radiator, and a second outflow path which is partitioned from the first outflow path by a partition wall and guides cooling water from the second outlet to a heat exchanger.
  • This configuration of the invention provides the following effects. That is, since the portion for connecting hoses or other passage members for connecting the inlet and the outlets to the radiator and the heat exchanger are formed in the cooling water inlet/outlet cover that is a unitary member, and they are locally formed on one side surface of the engine body, it is easier to connect the respective passage members for guiding cooling water, improve the readiness of the work therefor and the readiness of assembly of the engine. Furthermore, the configuration of the invention need not prepare special elements for supplying cooling water to the heat exchanger, such as joints, it reduces the number of parts and assembling steps related to the joints, for example. This is also advantageous for facilitating assembly of the engine.
  • the second outflow path may include a connecting portion for guiding cooling water from the second outlet to a throttle body.
  • the interface between the engine body and one of the first and second cover portions may be sealed by an elastic material packing, and the interface between the engine body and the other of the first and second cover portions may be sealed by a liquid packing.
  • at least one of a portion of the mount surface of the cooling water inlet/outlet cover positioned between a mount region of the elastic material packing or a mount-area-opposed region opposed to the mount region and a coating region of the liquid packing or a coating-area-opposed region opposed to the coating region may include a blocking portion which blocks intrusion of an extruded part of the liquid packing from the coating region into the mount region.
  • the following effects are provided. That is, when the liquid packing more advantageous in handling and cost is used in addition to the elastic material packing for sealing the interface between the cooling water inlet/outlet cover and the engine body upon affixing the cooling water inlet/outlet cover to the engine body, a part of the liquid packing extruding from the coating region and moving toward the elastic material packing is prevented from reaching the elastic material packing. Therefore, the elastic material packing is never spoiled by the extruded part of the liquid packing, and it is prevented from degrading in sealing property.
  • the blocking portion may be a recess such as a groove.
  • the first cover portion and the second cover portion may be connected by a connecting element.
  • the engine E to which the invention is applied is a head-top camshaft type water-cooled four-valve four-cycle engine to be borne in a vehicle.
  • the engine E includes a cylinder block 1 with an inline arrangement of four cylinders 5 (see Fig. 2 ), a cylinder head 2 coupled to the top end of the cylinder block 1, a head cover 3 coupled to the top end of the cylinder head 2, and an oil pan 4 coupled to the bottom end of the cylinder block 1.
  • the cylinder block 1, cylinder head 2, head cover 3 and oil pan 4 make up the engine body of the engine E.
  • front, rear, left and right directions are those directions with reference to the vehicle.
  • the suction manifold 6 On the front face of the cylinder head 2, a suction manifold 6 is affixed.
  • the suction manifold 6 includes a collecting tube 6a located just above the head cover 3 and having a throttle body 7 at the left end thereof, and four branch tubes 6b branching from the collecting tube 6a and connected to the front face of the cylinder head 2.
  • Each branch tube 6b communicates with a combustion chamber 8 (see Fig. 2 ) of each cylinder 5 via a suction port formed in the cylinder head 2.
  • a discharge manifold, not shown, is affixed to the rear surface of the cylinder head 2.
  • the cylinder block 1 having formed a cooling water jacket 11 includes a cooling water pump 13 having a pump body 13a (see Fig. 1 ) integrally formed at a right-end front portion thereof.
  • the cylinder head 2 having formed a cooling water jacket 12 accommodates a thermostat 15 in an accommodation chamber 14 formed at a left end portion that is one end portion in the alignment direction of the cylinders 5 (in this example, it corresponds to the left-and-right direction). Both cooling water jackets 11, 12 communicate through a large number of communication paths 16 formed in the cylinder head 2.
  • a part of the cooling water is supplied through the hose 27 to the heater core 29 for heat exchange with air for warming the compartment, and thereafter returns to the accommodating chamber 141 through the hose 28 and the inlet 32.
  • Another part of the cooling water in the cooling water jacket 12 is supplied to the throttle body 7 through the hose 30 for heating the throttle body 7 at a low temperature, and thereafter flows into a pipe 38 via the hose 31. Since the cooling water in the accommodating chamber 14 is suctioned by the cooling pump 13 through the pipe 38 connected to the outlet 37 formed in the cylinder head 2 to open into the accommodating chamber 14, the cooling water circulates in the cooling water jacket 12 without flowing in or through the radiator 25 in the cold state.
  • the outflow path 21 and the outflow path 22 are partitioned by the partition wall 68.
  • the radiator hose 24 is connected to the connecting portion 65 to make up the outflow path 21 for releasing the cooling water from the outlet 49 to the radiator 25 and the outflow path 22 adjacent to and partitioned from the outflow path 21 by the partition wall 68 to guide the cooling water from the outlet 52 to the heater core 29 and the throttle body 7 in conjunction with the hoses 27, 30 connected to the connecting portions 66, 67. Therefore, the connecting portions 62, 65, 66, 67 connected to the hoses 23, 24, 27 30 for connecting the inlet 42 and both outlets 21, 22 to the radiators 25, heater core 29 and throttle body 7 are formed in the cooling water inlet/outlet cover C that is a unitary member.
  • the embodiment Since the embodiment seals the connection between the inlet 42 and the inflow path 20 and the connection between the outlets 49, 52 and the outflow paths 21, 22, respectively, by using the elastic material packing 46 and the liquid packing 54, the embodiment can reduce the cost of the engine E from that of a model using the elastic material packing 46 alone, which needs the cost of the elastic material packing 46 and the cost for more accurate machining to ensure better sealing.
  • the reservoir portion may be formed in the partition surface 40a that is the mount surface 40 of the cylinder head 2, instead of the partition surface 60a of the mount surface 60 of the cooling water inlet/outlet cover C.
  • it may be formed in both mount surfaces 40, 60 of the partition surface 60a of the cooling water inlet/outlet cover C and the partition surface 40a of the cylinder head 2.
  • a bead may be provided on the partition surface 60a to slightly rise from the mount surface 60, or on the partition surface 40a to slightly rise from the mount surface 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Claims (6)

  1. Motor mit einem Kühlwassereinlass/auslassdeckel (C), der auf einer Seitenfläche eines Motorkörpers (2) vorgesehen und befestigt ist, um einen in dem Motorkörper ausgebildeten Kühlwassereinlass und -auslass abzudecken, wobei der Deckel (C) einen ersten Deckelabschnitt (C1) und einen zweiten Deckelabschnitt (C2) enthält, wobei der erste Deckelabschnitt (C1) den Einlass abdeckt und einen Einströmweg definiert, der mit einem Wegöffnungs/schließmechanismus (15) vom Thermostattyp in Verbindung steht, um Kühlwasser von einem Kühler (25) einzuführen, und wobei der zweite Deckelabschnitt (C2) den Auslass abdeckt, dadurch gekennzeichnet, dass:
    der Auslass einen ersten Auslass (49) und einen zweiten Auslass (52) enthält, und der zweite Deckelabschnitt (C2) mit einem ersten Auströmweg (21), der Kühlwasser von dem ersten Auslass (49) zu dem Kühler (25) führt, sowie einem zweiten Auslassströmungsweg (22), der von dem ersten Auslassströmungsweg (21) durch eine Trennwand (68) abgetrennt ist und Kühlwasser von dem zweiten Auslass (52) zu einem Wärmetauscher (29) führt, ausgebildet ist.
  2. Motor nach Anspruch 1, wobei der zweite Ausströmweg (22) einen Verbindungsabschnitt (67) enthält, der Kühlwasser von dem zweiten Auslass (52) zu einem Drosselkörper (7) führt.
  3. Motor nach Anspruch 1 oder 2, worin, entlang gegenüberliegender Montageflächen (40, 60) des Motorkörpers (2) und des Kühlwassereinass/auslassdeckels (C), eine Grenze zwischen dem Motorkörper (2) und einem der ersten und zweiten Deckelabschnitte (C1, C2) durch eine Elastikmaterialdichtung (46) abgedichtet ist, während eine Grenze zwischen dem Motorkörper (2) und dem anderen der ersten und zweiten Deckelabschnitte (C1, C2) mit einer Flüssigdichtung (54) abgedichtet ist, und zumindest ein Abschnitt der Montagefläche (60) des Kühlwassereinlass/auslassdeckels (C), der zwischen einem Montagebereich (47) der Elastikmaterialdichtung (46) oder einem dem Montagebereich (47) gegenüberliegenden Bereich (69) und einem Beschichtungsbereich (55) der Flüssigdichtung (54) oder einem dem Beschichtungsbereich (55) gegenüberliegenden Bereich (70) angeordnet ist, einen Sperrabschnitt (71) enthält, der das Eindringen eines extrudierten Teils der Flüssigdichtung (54) von dem Beschichtungsbereich (55) in den Montagebereich (47) blockiert.
  4. Motor nach Anspruch 3, worin der Sperrabschnitt (71) eine Vertiefung ist.
  5. Motor nach Anspruch 4, wobei die Vertiefung eine Nut ist.
  6. Motor nach Anspruch 1 oder 3, worin der erste Deckelabschnitt (C1) und der zweite Deckelabschnitt (C2) durch ein Verbindungselement (72) verbunden sind.
EP02009169A 2001-05-15 2002-04-24 Brennkraftmaschine mit einem Kühlwasserkanaldeckel Expired - Fee Related EP1258608B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001145069 2001-05-15
JP2001145069A JP3775571B2 (ja) 2001-05-15 2001-05-15 冷却水出入口カバーを備える内燃機関

Publications (3)

Publication Number Publication Date
EP1258608A2 EP1258608A2 (de) 2002-11-20
EP1258608A3 EP1258608A3 (de) 2004-12-01
EP1258608B1 true EP1258608B1 (de) 2008-06-04

Family

ID=18990936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02009169A Expired - Fee Related EP1258608B1 (de) 2001-05-15 2002-04-24 Brennkraftmaschine mit einem Kühlwasserkanaldeckel

Country Status (7)

Country Link
EP (1) EP1258608B1 (de)
JP (1) JP3775571B2 (de)
CN (1) CN1224777C (de)
BR (1) BR0201840B1 (de)
DE (1) DE60226923D1 (de)
MY (1) MY130969A (de)
TW (1) TW554133B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3731745B2 (ja) * 2002-08-08 2006-01-05 本田技研工業株式会社 Ｄｏｈｃ型水冷式内燃機関
JP4278131B2 (ja) * 2003-04-04 2009-06-10 本田技研工業株式会社 水冷式内燃機関の冷却構造
CN103133114B (zh) * 2003-07-10 2015-05-27 雅马哈发动机株式会社 发动机
DE102004012372A1 (de) 2004-03-13 2005-09-29 Daimlerchrysler Ag Kühlkreislauf für eine kühlmittelgekühlte Brennkraftmaschine
JP5101234B2 (ja) * 2007-10-16 2012-12-19 本田技研工業株式会社 開弁特性可変型動弁装置
US20090183696A1 (en) * 2008-01-18 2009-07-23 O'flynn Kevin P Liquid cooling system for internal combustion engine
US20160356559A1 (en) 2015-06-02 2016-12-08 International Business Machines Corporation Manifold for a liquid cooling system
JP6631264B2 (ja) * 2016-01-15 2020-01-15 スズキ株式会社 内燃機関の冷却構造

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1916640C3 (de) * 1969-04-01 1975-11-20 Volkswagenwerk Ag, 3180 Wolfsburg Kühl- und Heizwasserkreislauf für ein Kraftfahrzeug mit einem wassergekühlten Motor
FR2663988B1 (fr) * 1990-06-27 1994-08-05 Renault Boitier de sortie d'eau pour moteur a combustion interne.
JP3354519B2 (ja) * 1999-03-31 2002-12-09 本田技研工業株式会社 エンジンの冷却構造

Also Published As

Publication number Publication date
EP1258608A2 (de) 2002-11-20
CN1224777C (zh) 2005-10-26
MY130969A (en) 2007-07-31
JP3775571B2 (ja) 2006-05-17
BR0201840A (pt) 2003-03-11
CN1385599A (zh) 2002-12-18
EP1258608A3 (de) 2004-12-01
JP2002339744A (ja) 2002-11-27
DE60226923D1 (de) 2008-07-17
BR0201840B1 (pt) 2010-10-19
TW554133B (en) 2003-09-21

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