DE3335434C2 - Arrangement for influencing the cooling water temperature of internal combustion engines - Google Patents

Arrangement for influencing the cooling water temperature of internal combustion engines

Info

Publication number
DE3335434C2
DE3335434C2 DE3335434A DE3335434A DE3335434C2 DE 3335434 C2 DE3335434 C2 DE 3335434C2 DE 3335434 A DE3335434 A DE 3335434A DE 3335434 A DE3335434 A DE 3335434A DE 3335434 C2 DE3335434 C2 DE 3335434C2
Authority
DE
Germany
Prior art keywords
cooling water
engine
heat exchanger
internal combustion
charge air
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
Application number
DE3335434A
Other languages
German (de)
Other versions
DE3335434A1 (en
Inventor
Kurt Dipl.-Ing. 2304 Laboe Aeffner
Joachim Dipl.-Ing. 2303 Gettorf Gutermuth
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 Motoren GmbH and Co KG
Original Assignee
Krupp Mak Maschinenbau GmbH
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 Krupp Mak Maschinenbau GmbH filed Critical Krupp Mak Maschinenbau GmbH
Priority to DE3335434A priority Critical patent/DE3335434C2/en
Publication of DE3335434A1 publication Critical patent/DE3335434A1/en
Application granted granted Critical
Publication of DE3335434C2 publication Critical patent/DE3335434C2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0493—Controlling the air charge temperature
    • 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
    • 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
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • 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
    • F01P2060/02—Intercooler
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

Es ist bei schwerölbetriebenen Verbrennungskraftmaschinen vorgesehen, daß an der Kühlwasseraustrittsseite des dem Motor vorgeschalteten Ladeluftwärmeaustauschers über einen Temperaturfühler ein vorgegebener Sollwert an dieser Stelle einhaltbar ist.In the case of internal combustion engines operated with heavy oil, it is provided that a predetermined setpoint value can be maintained at this point via a temperature sensor on the cooling water outlet side of the charge air heat exchanger connected upstream of the engine.

Description

Die Erfindung betrifft eine Anordnung zur Beeinflussung der Zylinderkühlwassertemperatur von schwerölbetriebenen Verbrennungskraftmaschinen mit einem über einen Temperaturfühler regelbaren, einen Kühler und eine Pumpe umfassenden Kühlwasserzwangskreislauf, wobei dem Motorkühlwasseraustritt im Kreislauf ein Ladeluftwärmeaustauscher nachgeschaltet istThe invention relates to an arrangement for influencing the cylinder cooling water temperature of heavy oil operated Internal combustion engines with a cooler that can be regulated via a temperature sensor and a pump comprising a forced cooling water circuit, the engine cooling water outlet in the circuit a charge air heat exchanger is connected downstream

Bei schwerölbetriebenen Motoren, insbesondere für den Schiffsantrieb ist es bekannt, die Kühlwassertemperatur am Austritt aus dem Motor unabhängig von der Last auf einen konstanten Weit zu regeln. Dies hat jedoch den Nachteil, daß sich bei den unterschiedlichen Lastverhältnissen des Schiffsbetriebes keinesfalls überall im Kreislauf die für den jeweiligen Betrieb optimalen Temperaturen einstellen.In heavy-oil engines, especially for ship propulsion, it is known that the cooling water temperature to be regulated to a constant level at the exit from the motor, regardless of the load. However, this has the disadvantage that with the different load conditions of the ship operation it is by no means everywhere Set the optimal temperatures for the respective operation in the circuit.

Es ist deshalb auch schon versucht worden, das Betriebsverhalten des Motors dadurch zu verbessern, daß der Sollwert der Kühlwassertemperatur am Austritt aus dem Motor lastabhängig veränderbar geregelt wird. Hierfür ist jedoch ein größerer Regelaufwand erforderlich. It has therefore already been attempted to improve the performance of the engine in that the setpoint of the cooling water temperature at the outlet from the engine can be changed depending on the load. For this, however, a greater control effort is required.

Regelanordnungen, die in Verbindung mit Temperaturfühler im Kühlwasserkreislauf arbeiten, sind gemäß der Zeitschrift »The Oil Engine and Gas Turbine«, Juni 1961, Seite 45, und der DE-OS 25 45 227 bereits bekannt. Hierbei ist es aber nicht möglich, mit geringem Regelaufwand Betriebsverhältnisse zu schaffen, die bei Teillast eine hohe Temperatur zur Verhinderung der Kondensation und Korrosion ermöglicht, während sich bei Vollast demgegenüber eine niedrige Temperatur einstellt. Control arrangements that work in conjunction with temperature sensors in the cooling water circuit are in accordance with the magazine "The Oil Engine and Gas Turbine", June 1961, page 45, and DE-OS 25 45 227 already known. In this case, however, it is not possible to create operating conditions that are at part load with little control effort Allowing a high temperature to prevent condensation and corrosion while at Full load, on the other hand, sets a low temperature.

Die Aufgabe der Erfindung wird darin gesehen, bei einer Verbrennungskraftmaschine der eingangs genannten Art den Temperaturfühler derart anzuordnen, daß bei möglichst geringem Regelaufwand optimale Betriebsverhältnisse erreichbar werden.The object of the invention is seen in an internal combustion engine of the type mentioned at the beginning Art of arranging the temperature sensor in such a way that optimum operating conditions are achieved with as little control effort as possible become attainable.

Diese Aufgabe wird dadurch gelöst, daß der Temperaturfühler des Kühlwasserkreises, in dem in Strömungsrichtung Motor mit Ladeluftwärmeaustauscher hintereinandergeschaltet sind, zur Einhaltung eines vorgegebenen Sollwertes an der Kühlwasseraustrittseite des nachgeschalteten Ladeluftwärmeaustauschers angeordnet ist.This object is achieved in that the temperature sensor of the cooling water circuit in which, in the direction of flow, the engine with charge air heat exchanger are connected in series to maintain a specified setpoint on the cooling water outlet side of the downstream charge air heat exchanger is arranged.

Anstelle der Temperatur am Austritt des Kühlwassers aus dem Zylinderdeckel wird also jetzt die Kühlwassertemperatur am Austritt aus dem Ladeluftwärmeaustauscher konstant gehalten. Nur durch diese Änderung gegenüber den bekannten Anordnungen erhöht sich bei Teillast die Temperatur am Austritt aus dem Motor lastabhängig ungefähr um den Betrag der Wass seraufwärmung im Ladeluftwärmeaustauscher bei Volllastbetrieb, wodurch Kondensation und damit Korrosion vermieden wird. Bei Vollast ergibt sich bei richtiger Wahl des Sollwertes keine Änderung gegenüber dem ursprünglichen Zustand. Damit ist allein durch Änderung der Anordnung des Temperaturfühlers eine Wirkung erzielbar, die sonst nur mit Hilfe von kostspieligen Zusatzeinrichtungen erreichbar ist.Instead of the temperature at the outlet of the cooling water from the cylinder cover, the cooling water temperature is now used kept constant at the outlet from the charge air heat exchanger. Just by making this change compared to the known arrangements, the temperature at the outlet from the increases at part load Depending on the engine load, approximately by the amount of water heating in the charge air heat exchanger at full load, whereby condensation and thus corrosion is avoided. At full load, the result is correct Choice of the setpoint no change compared to the original state. So that is solely through change the arrangement of the temperature sensor an effect can be achieved that otherwise only with the help of costly Additional equipment is accessible.

In der nachfolgenden Beschreibung und in der Zeichnung ist die Erfindung näher erläutert und schematisch dargestellt Es zeigtIn the following description and in the drawing the invention is explained in more detail and shown schematically It shows

F i g. 1 ein Schema einer erfindungsgemäßen Anordnung, F i g. 1 shows a diagram of an arrangement according to the invention,

F i g. 2 den Temperaturverlauf am Motoraustritt in Abhängigkeit von der Motorlast bei einer bekanntenF i g. 2 shows the temperature profile at the engine outlet as a function of the engine load for a known one

Anordnung undArrangement and

Fig.3 den Temperaturverlauf am Motoraustritt bei einer erfindungsgemäßen Anordnung.Fig. 3 shows the temperature profile at the engine outlet an arrangement according to the invention.

In F i g. 1 ist dargestellt, wie einem schwerölbetriebenen Motor 1 durch eine Pumpe 2 das Kühlwasser von einem Kühler 3 über eine Leitung 4 zugeführt wird. Das Kühlwasser tritt bei 5 aus dem Motor 1 wieder aus und bei einen Ausführungsbeispiel in den Heißteil eines zweigeteilten Ladeluftwärmeaustauschers 6 über, bevor es aus diesem über die Leitung 7 dem Kühler 3 wieder zuläuftIn Fig. 1 shows how the cooling water from a radiator 3 is fed via a line 4 to an engine 1 operated with heavy oil by a pump 2. The cooling water exits the engine 1 again at 5 and, in one embodiment, passes into the hot part of a two-part charge air heat exchanger 6 before it flows back to the cooler 3 via the line 7

Es ist nunmehr ein Temperaturfühler 8, der über eine Regelleitung 9 auf den Kühler 3 bzw. ein anderes aktives Element des Kreislaufes einwirken kann, in der Leitung 7 am Austritt des Kühlwassers aus dem Wärmcaustauscher 6 angeordnet, wobei der Kühler 3 so geregelt werden kann, daß die Wassertemperatur am Austritt aus dem Wärmeaustauscher 6 in die Leitung 7 kosnlani gehalten wird.It is now a temperature sensor 8, which has a Control line 9 to the cooler 3 or another active one Element of the circuit can act in line 7 at the outlet of the cooling water from the heat exchanger 6 arranged, wherein the cooler 3 can be controlled so that the water temperature at the outlet from the heat exchanger 6 in the line 7 is kept kosnlani.

Eine Zuluftleitung zu dem Wärmeaustauscher 6 istA supply air line to the heat exchanger 6 is

mit 10 bezeichnet.denoted by 10.

Während früher die Kühlwassertemperatur bei 5a am Austritt5 aus dem Motor I unabhängig von der Last auf einem konstanten Sollwert z. B. 85CC, geregelt wurde, was in Fig. 2 dargestellt ist wird jetzt nach der Erfindung die Wassertemperatur bei 8 am Austritt aus dem Ladeluftwärmeaustauscher 6 konstant gehalten. Die Änderung der Kühlwasserlemperatur bei 5a, die hierdurch infolge Laständerung am Motoraustritt 5 hervorgerufen wird, ist aus F i g. 3 erkennbar, wobei die Temperatur in dery- und die Lastprozente in der ^-Richtung aufgetragen sind.While previously the cooling water temperature at 5a at the exit5 from the engine I was independent of the load on a constant setpoint z. B. 85 C C, was regulated, which is shown in Fig. 2, the water temperature is now kept constant at 8 at the outlet from the charge air heat exchanger 6 according to the invention. The change in the cooling water temperature at 5a, which is caused as a result of the load change at the engine outlet 5, is shown in FIG. 3 can be seen, the temperature being plotted in the y direction and the load percent in the ^ direction.

Bei richtiger Wahl der Einstellwerte ergibt sich bei Vollast keine Änderung gegenüber dem urpsrünglichcn Zustand (Fig.2); bei Teillast hingegen erhöht sich, crwünschter- und vorteilhafterweise, die Temperatur am Motoraustritt 5.If the setting values are selected correctly, the result is Full load no change compared to the original state (Fig. 2); at part load, on the other hand, the desired and advantageously, the temperature at the engine outlet 5.

Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings

Claims (1)

Patentanspruch:Claim: Anordnung zur Beeinflussung der Zylinderkühlwassertemperatur von schwerölbetriebenen Verbrennungskraftmaschinen mit einem über einen Temperaturfühler regelbaren, einen Kühler und eine Pumpe umfassenden Kühlwasserzwangskreislauf, wobei dem Kühlwasseraustritt am Motor im Kreislauf ein Ladeluftwärmeaustauscher nachgeschaltet ist, dadurch gekennzeichnet, daß der Temperaturfühler (8) des Kühlwasserkreises (1,2,3, 4,5,6,7), in dem in Strömungsrichtung Motor (1) mit Ladeluftwärmeaustauscher (6) hintereinandergeschaltet sind, zur Einhaltung eines vorgegebenen Sollwertes an der Kühlwasseraustrittsseite (7) des nachgeschalteten Ladeluftwärmeaustauschers (6) angeordnet istArrangement for influencing the cylinder cooling water temperature of internal combustion engines powered by heavy oil with a temperature sensor adjustable, a cooler and a Pump comprehensive cooling water circulation, whereby the cooling water outlet on the engine in the circuit a charge air heat exchanger is connected downstream, characterized in that the Temperature sensor (8) of the cooling water circuit (1,2,3, 4,5,6,7), in which the engine (1) with charge air heat exchanger (6) is connected in series in the direction of flow are to maintain a specified setpoint on the cooling water outlet side (7) of the downstream charge air heat exchanger (6) is arranged
DE3335434A 1983-09-30 1983-09-30 Arrangement for influencing the cooling water temperature of internal combustion engines Expired DE3335434C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3335434A DE3335434C2 (en) 1983-09-30 1983-09-30 Arrangement for influencing the cooling water temperature of internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3335434A DE3335434C2 (en) 1983-09-30 1983-09-30 Arrangement for influencing the cooling water temperature of internal combustion engines

Publications (2)

Publication Number Publication Date
DE3335434A1 DE3335434A1 (en) 1985-04-18
DE3335434C2 true DE3335434C2 (en) 1985-12-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE3335434A Expired DE3335434C2 (en) 1983-09-30 1983-09-30 Arrangement for influencing the cooling water temperature of internal combustion engines

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3617350C1 (en) * 1986-05-23 1987-10-08 Krupp Mak Maschb Gmbh Cooling arrangement for internal combustion engines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2545227A1 (en) * 1975-10-09 1977-04-28 Motoren Werke Mannheim Ag Supercharged compression ignition engine - maintains combustion air at constant temperature by heater and cooler systems

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Publication number Publication date
DE3335434A1 (en) 1985-04-18

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8327 Change in the person/name/address of the patent owner

Owner name: MAK MOTOREN GMBH, 24159 KIEL, DE

8339 Ceased/non-payment of the annual fee