EP0664381B1 - Moteur à combustion interne avec un circuit de fluide de refroidissement - Google Patents

Moteur à combustion interne avec un circuit de fluide de refroidissement Download PDF

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Publication number
EP0664381B1
EP0664381B1 EP94118644A EP94118644A EP0664381B1 EP 0664381 B1 EP0664381 B1 EP 0664381B1 EP 94118644 A EP94118644 A EP 94118644A EP 94118644 A EP94118644 A EP 94118644A EP 0664381 B1 EP0664381 B1 EP 0664381B1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
cooling medium
coolant
pump
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 - Lifetime
Application number
EP94118644A
Other languages
German (de)
English (en)
Other versions
EP0664381A1 (fr
Inventor
Walter Wanjek
Frank Ganssloser
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.)
Caterpillar Energy Solutions GmbH
Original Assignee
Motoren Werke Mannheim AG
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 Motoren Werke Mannheim AG filed Critical Motoren Werke Mannheim AG
Publication of EP0664381A1 publication Critical patent/EP0664381A1/fr
Application granted granted Critical
Publication of EP0664381B1 publication Critical patent/EP0664381B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
    • F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
    • F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • 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
    • F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F01P2005/125—Driving auxiliary pumps electrically
    • 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
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine

Definitions

  • the invention relates to an internal combustion engine with at least one Cooling circuit in which a by a coolant pump through at least the internal combustion engine and a heat exchanger conveyable coolant circulates that while the engine is at a standstill is heatable, the cooling water from one during standstill the coolant pump which can be driven by the internal combustion engine the coolant circuit can be promoted.
  • Such an internal combustion engine is known from FR-A-1 085 207.
  • This document discloses an internal combustion engine, the one has flanged gearbox on the crankshaft, which via a Flywheel is connectable to an auxiliary engine. This is in turn connected to a coolant pump via a coupling.
  • a coolant pump For preheating the cooling water of the internal combustion engine now operated the auxiliary engine and this drives the coolant pump on. Then the cooling water from the coolant pump is initially promoted by the cooling water room Auxiliary internal combustion engine conveyed and only then in the individual cylinders the water jacket surrounding the cylinders of the internal combustion engine. From these, the cooling water becomes the coolant pump promoted back.
  • the internal combustion engine is operated itself and accordingly the cooling water is heated to the extent that it is passed through the cooler 18, it is via a line to a Pumped back on the outlet side of the coolant pump. That is, during normal operation of the internal combustion engine, the Coolant pump in the delivery of the cooling water through the radiator no function and the whole connected to the crankshaft Auxiliary device, consisting of gear, flywheel, auxiliary engine and the coolant pump can usefully be switched off will. For pumping the cooling water during operation the internal combustion engine is therefore a further cooling water pump, not shown required.
  • the still known DE-A-29 40 643 is a Internal combustion engine in which the oil of the internal combustion engine is preheated can be.
  • This is a device that especially as an external system to the internal combustion engine Quick couplings can be connected or through the internal combustion engine itself or an additional electric motor can be driven. In any case, it is an adaptive system that is additionally connected to the internal combustion engine and actually Operation of the internal combustion engine has no function.
  • the invention has for its object this generic To further develop the device in such a way that the lowest possible additional construction effort while heating the cooling water the shutdown of the internal combustion engine is possible.
  • This object is achieved in that the coolant by the during the standstill of the internal combustion engine drivable coolant pump conveyable through the coolant circuit is.
  • This embodiment of the invention has several findings underlying. At first it was found out in experiments that heating of the cooling water during the standstill of the Internal combustion engine to about 40 ° C compared to not heated Cooling water causes significantly improved exhaust gas quality, at the same time but also a better start of the internal combustion engine better and faster ignition of the combustion mixture enables and thereby a faster start up overall the operating point of the internal combustion engine can be reached. This is particularly so important for gas engine systems, for example in one Combined heat and power plants are used and where according to the requirement of electrical energy or heat, if possible must be provided immediately.
  • Coolant pump uses a single pump, whereby this pump during the operation of the internal combustion engine the cooling water for cooling purposes and during standstill the internal combustion engine - as described - for heating purposes.
  • the coolant pump is dependent operable from the coolant temperature. This can be done with simple Average the specified coolant temperature, for example in a range between 38 ° C and 40 ° C can be adjusted by for example, a temperature sensor in the coolant circuit is switched on over which the drive of the coolant pump on and is turned off. This is particularly useful when using the Internal combustion engine in combined heat and power plants the aforementioned electrical drive of the coolant pump.
  • the delivery capacity of the coolant pump is a further development of the invention adjustable depending on the coolant temperature.
  • the specified coolant temperature can be achieved with simple means for example, set from 40 ° C, for example a temperature sensor in the coolant circuit is turned on is used to regulate the drive of the coolant pump. Also this is particularly useful when using the internal combustion engine in Combined heat and power plants the aforementioned electric drive Coolant pump on.
  • a throttle in the coolant circuit switchable In a development of the invention is at least during the standstill the internal combustion engine a throttle in the coolant circuit switchable.
  • the restriction results from the restricted flow area an increased flow rate of the cooling water, which ultimately results from fluid friction in an increase in temperature of the coolant.
  • the throttle has a variable one Throttle cross section. This can make an adjustment to the given requirements regarding an additional Coolant heating by changing the throttle cross section respectively.
  • the throttle cross section changeable depending on the coolant temperature. This facility can interact with the scheme the coolant pump a favorable interaction of these two components be guaranteed with regard to heating the coolant.
  • the figure shows a coolant circuit designed according to the invention Internal combustion engine, in particular as a gas engine system for combined heat and power plants is trained.
  • the coolant circuit is arranged outside the internal combustion engine 1 Coolant pump 2, which is controlled by an electric motor 3 is.
  • the coolant pump 2 conveys the coolant through a connecting line, in which a flexible connection 4a is installed, in the coolant circuit the internal combustion engine 1, which in turn drives a generator 5.
  • the output from the coolant circuit of the internal combustion engine is in turn provided with a flexible connection 4b, and in the further course of External coolant line is an adjustable and lockable throttle 6 used.
  • a branch line behind the throttle 6 provided, in which a vent valve 7 and a pressure relief valve 8 are switched on.
  • the coolant continues through the main circuit a heat exchanger 9, from there back into the inlet of the coolant pump 2 to arrive. It is between the heat exchanger 9 and the Coolant pump 2, a further branch line is provided, into which an expansion tank 10 and a further pressure relief valve 11 are switched on.
  • the coolant pump 2 By operating the coolant pump 2 during the When the internal combustion engine 1 is at a standstill, the coolant is heated to approximately 40 ° C. This preheating results in better starting behavior Internal combustion engine and the internal combustion engine 1 can with low exhaust gas emission values are brought up to their operating point more quickly. Another significant advantage is a significant reduction in wear the internal combustion engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Claims (6)

  1. Moteur à combustion interne avec au moins un circuit de fluide réfrigérant, dans lequel circule une eau de refroidissement pouvant être refoulée par une pompe à réfrigérant (2) à travers au moins le moteur à combustion interne (1) et un échangeur thermique (9), fluide qui peut être chauffé pendant l'arrêt du moteur (1), l'eau de refroidissement pouvant être refoulée à travers le circuit d'agent réfrigérant par une pompe à réfrigérant (2) pouvant être entraínée pendant l'arrêt du moteur (1),
    caractérisé en ce que
    la pompe à réfrigérant peut être entraínée par un moteur électrique (3) et la pompe à réfrigérant (2) refoule pendant la marche du moteur (1) l'eau de refroidissement dans le but de refroidir.
  2. Moteur à combustion interne selon la revendication 1,
    caractérisé en ce que
    la pompe à réfrigérant (2) peut être commandée en fonction de la température de l'agent réfrigérant.
  3. Moteur à combustion interne selon les revendications 1 ou 2,
    caractérisé en ce que
    la puissance de refoulement de la pompe à réfrigérant (2) est réglable en fonction de la température de l'agent réfrigérant.
  4. Moteur à combustion interne selon une des revendications 1 à 3,
    caractérisé en ce qu'
    un étranglement (6) est monté dans le circuit d'agent réfrigérant
  5. Moteur à combustion interne selon la revendication 4,
    caractérisé en ce que
    l'étranglement (6) comporte une section transversale variable.
  6. Moteur à combustion interne selon une des revendications 4 ou 5,
    caractérisé en ce que
    la section transversale de l'étranglement est variable en fonction de la température de l'agent réfrigérant.
EP94118644A 1993-12-24 1994-11-26 Moteur à combustion interne avec un circuit de fluide de refroidissement Expired - Lifetime EP0664381B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4344602A DE4344602A1 (de) 1993-12-24 1993-12-24 Brennkraftmaschine mit einem Kühlmittelkreislauf
DE4344602 1993-12-24

Publications (2)

Publication Number Publication Date
EP0664381A1 EP0664381A1 (fr) 1995-07-26
EP0664381B1 true EP0664381B1 (fr) 1998-09-09

Family

ID=6506314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118644A Expired - Lifetime EP0664381B1 (fr) 1993-12-24 1994-11-26 Moteur à combustion interne avec un circuit de fluide de refroidissement

Country Status (4)

Country Link
EP (1) EP0664381B1 (fr)
DE (2) DE4344602A1 (fr)
DK (1) DK0664381T3 (fr)
ES (1) ES2120559T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916551A1 (de) * 1999-04-13 2000-10-19 Pierburg Ag Kühlmitttelpumpe
CN104612877A (zh) * 2014-11-28 2015-05-13 中联重科股份有限公司渭南分公司 一种车辆暖机控制设备、系统、方法及工程机械

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1085207A (fr) * 1952-10-16 1955-01-28 Dispositif pour la mise en marche des moteurs à combustion interne
GB749023A (en) * 1953-01-29 1956-05-16 Thompson Prod Inc Improvements in or relating to a combined heater and pump for fluids
GB834090A (en) * 1957-09-27 1960-05-04 Vickers Electrical Co Ltd Improvements relating to cooling arrangements for internal combustion engines
DE2607343A1 (de) * 1976-02-23 1977-08-25 Moll Hans Heinrich Motordrehzahlunabhaengiger antrieb von wasserpumpe und oelpumpe bei verbrennungsmotoren
DE2940643A1 (de) * 1979-10-06 1981-04-16 Klöckner-Humboldt-Deutz AG, 5000 Köln Einrichtung zum an- bzw. aufheizen von maschinen
DE3005966A1 (de) * 1980-02-16 1981-09-03 Klöckner-Humboldt-Deutz AG, 5000 Köln Einrichtung zum aufheizen von raumluft
DK147207C (da) * 1981-10-29 1984-11-05 Niels Thure Hallin Koelesystem ved vaeskekoelet forbraendingsmotor
DE3151472A1 (de) * 1981-12-24 1983-07-21 Klöckner-Humboldt-Deutz AG, 5000 Köln Einrichtung zum beheizen einer bedienungskabine
DE3341097A1 (de) * 1983-11-12 1985-05-23 Volkswagenwerk Ag, 3180 Wolfsburg Brennkraftmaschine fuer fahrzeuge, insbesondere personenkraftfahrzeuge

Also Published As

Publication number Publication date
EP0664381A1 (fr) 1995-07-26
DE59406882D1 (de) 1998-10-15
DK0664381T3 (da) 1999-06-07
ES2120559T3 (es) 1998-11-01
DE4344602A1 (de) 1995-06-29

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