DK147207B

DK147207B - REFRIGERATOR ENGINE COOLING COOLING SYSTEM

Info

Publication number: DK147207B
Application number: DK477681A
Authority: DK
Inventors: Niels Thure Hallin
Original assignee: Niels Thure Hallin
Priority date: 1981-10-29
Filing date: 1981-10-29
Publication date: 1984-05-14
Also published as: SE444348B; DK147207C; SE8206125D0; SE8206125L; DE3238919A1; DK477681A; GB2108262A; GB2108262B

Description

147207147207

Den foreliggende opfindelse angår et kølesystem ved væskekølet forbrændingsmotor, hvis motorblok har kanaler for cirkulerende kølevæske, og med en isoleret lagerbeholder og en pumpe, hvormed kølervæske kan ledes fra motorblokkens kanaler til lagerbeholderen og fra denne tilbage til motorblokkens kanaler.The present invention relates to a liquid-cooled internal combustion engine cooling system whose engine block has circulating coolant ducts, and with an insulated storage tank and pump through which coolant can be passed from the engine block's channels to the storage tank and back to the engine block's channels.

Ved koldstart af en forbrændingsmotor er brændstofforbruget og motorslitagen forøget i opvarmningsperioden.At the cold start of an internal combustion engine, the fuel consumption and engine wear are increased during the heating period.

Til imødegåelse af dette er det kendt, eksempelvis fra tysk offentliggørelsesskrift nr. 26 35 632, at man, når motoren standses, leder den opvarmede kølervæske til en isoleret lagerbeholder, og at man, inden motoren atter startes, leder kølervæsken fra lagerbeholderen tilbage til motorblokkens kanaler.To counter this, it is known, for example from German Publication No. 26 35 632, that when the engine is stopped, the heated coolant is led to an insulated storage tank and that before the engine is restarted, the coolant from the storage container is returned to the engine block. channels.

Ved denne fremgangsmåde opnår man, så længe kølervæsken i lagerbeholderen er varm, at motorblokken opvarmes inden start, således at man modvirker de med koldstart forbundne ulemper.By this method, as long as the coolant in the storage tank is hot, the engine block is heated before starting, so as to counteract the disadvantages associated with cold start.

Ifølge opfindelsen er lagerbeholderen bortset fra to til- og afgangsstudse udadtil lukket og ved hjælp af et frem- og tilbagebevægeligt stempel delt i to kamre med hver sin af de nævnte studse, hvilke studse via hver sin slange er forbundet med hver sin ende af motorblokkens kølekanaler, og pumpen er en reversibel pumpe, der er indsat i den ene af slangerne.In accordance with the invention, apart from two outwardly sealed inlet and outlet sockets, the storage container is divided into two chambers with each of said sockets, each of which sockets are connected via each hose to each end of the engine block cooling ducts , and the pump is a reversible pump inserted into one of the hoses.

Ved denne udformning opnår man, at kølersystemet er lukket. Det ene kammer i lagerbeholderen indeholder, når motoren er i drift, kold kølervæske. Når motoren standses, pumpes varm kølervæske ind i det andet kammer, hvorved stemplet forskydes og leder den kolde kølevæske til motorblokkens kanaler. Inden motoren igen skal startes, aktiveres pumpen, men nu i modsat retning, således at den opbevarede, varme kølervæske ledes fra det andet kammer til motorblokkens kanaler samtidig med, at kold kølervæske fra motorblokken ledes til det første kammer.By this design, the chiller system is closed. One chamber in the storage tank, when the engine is in operation, contains cold coolant. When the engine is stopped, hot coolant is pumped into the second chamber, which displaces the piston and directs the coolant to the engine block ducts. Before starting the engine again, the pump is activated, but now in the opposite direction, so that the stored hot coolant is passed from the second chamber to the ducts of the engine block while at the same time cold coolant from the engine block is led to the first chamber.

Opfindelsen skal i det følgende forklares nærmere i forbindelse med tegningen, hvor 2 147207 fig. 1 viser en væskekølet forbrændingsmotor med et kølesystem ifølge opfindelsen, og fig. 2 mere detaljeret et snit gennem en i fig. 1 vist lagerbeholder.BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be explained in more detail in connection with the drawing, in which FIG. 1 shows a liquid-cooled internal combustion engine with a cooling system according to the invention, and FIG. 2 is a more detailed sectional view of one of FIG. 1 shown in storage container.

I fig. 1 er vist en væskekølet forbrændingsmotor, hvis motorblok 1 indeholder ikke nærmere viste kanaler for cirkulerende kølervæske, der også ledes gennem en luftkølet varmeveksler, en såkaldt køler. Den ene ende af motorblokkens 1 kølekanaler er via en slange 5’ med en reversibel pumpe 3 forbundet med et første kammer 2' i en isoleret lagerbeholder 2. I lagerbeholderen afgrænses det første kammer 2' ved hjælp af et frem- og tilbagebevægeligt stempel 4 fra et andet kammer 2". Dette andet kammer 2" er via en slange 5" forbundet med den anden ende af motorblokkens 1 kølekanaler .In FIG. 1, a liquid-cooled internal combustion engine is shown, the engine block 1 of which contains no further shown channels for circulating coolant liquid, which is also passed through an air-cooled heat exchanger, a so-called cooler. One end of the cooling ducts of the engine block 1 is connected via a hose 5 'with a reversible pump 3 to a first chamber 2' in an insulated storage container 2. In the storage container, the first chamber 2 'is delimited by a reciprocating piston 4 from a second chamber 2 ". This second chamber 2" is connected via a hose 5 "to the other end of the cooling ducts of the engine block 1.

Så længe motoren er i gang, opvarmes kølervæske i motorblokkens 1 kanaler. Når motoren standses, aktiveres pumpen 3, således at den varme kølervæske fra den ene ende af. motorblokkens kølekanaler ledes til lagerbeholderens første kammer 2*. Herved forskydes stemplet 4, således at kold kølervæske fra det andet kammer 2" ledes til motorblokkens 1 kølekanaler, men i den anden ende af kølekanalerne.As long as the engine is running, coolant is heated in the channels of the engine block 1. When the engine is stopped, the pump 3 is activated so that the coolant from one end of the coolant. the cooling ducts of the engine block are led to the first chamber 2 of the storage container. Hereby the piston 4 is displaced so that cold coolant from the second chamber 2 "is fed to the cooling ducts of the engine block 1, but at the other end of the cooling ducts.

Inden motoren atter startes, aktiveres pumpen 3 igen, men nu i den modsatte transportretning, således at varm kølervæske fra den isolerede lagerbeholder 2 ledes til motorblokken 1, medens kold kølervæske fra motorblokken ledes til lagerbeholderen.Before the engine is restarted, the pump 3 is reactivated, but now in the opposite transport direction, so that hot coolant from the insulated storage tank 2 is directed to the engine block 1, while cold coolant from the engine block is fed to the storage tank.

For at der ikke skal ske varmeveksling mellem den varme og den kolde kølervæske i de to kamre, er stemplet 4 hensigtsmæssigt isolerende.To prevent heat exchange between the hot and cold coolant in the two chambers, the plunger 4 is suitably insulating.

Pumpens motor kan stoppes ved hjælp af endestillingskontakter, der aktiveres af stemplet 4 i lagerbeholderen, eller, mere hensigtsmæssigt, af et tidsrelæ, der sørger for, at pumpen kun er i drift i en periode, der svarer til lagerbeholderens 2 volumen.The pump motor can be stopped by end position switches actuated by the piston 4 in the storage container or, more conveniently, by a time relay which ensures that the pump is only operating for a period corresponding to the storage volume of 2.