CN1218871A

CN1218871A - Improvements relating to liquid cooled I. C. engines

Info

Publication number: CN1218871A
Application number: CN98122750A
Authority: CN
Inventors: 乔纳森·A·塞耶
Original assignee: Concentric Pumps Ltd
Current assignee: Concentric Pumps Ltd
Priority date: 1997-12-03
Filing date: 1998-12-03
Publication date: 1999-06-09
Also published as: NZ332759A; BR9805292A; EP0921284A3; EP0921284A2; KR19990062576A; ZA9810352B; GB9725621D0; JPH11247657A; ID21708A; CA2254822A1; AU9240798A; AR014053A1

Abstract

A liquid cooled internal combustion engine cooling system comprising a radiator 10, and an impeller 18 mounted on a drive shaft 20 and forming part of the radiator assembly. Preferably a compartment in the radiator header tank is used as an impeller chamber and the chamber may be closed by a plate carrying a bearing and a seal for co-operation with the drive shaft from the drive motor 12.

Description

Improved liquid-cooled engine

The present invention relates to liquid-cooled engine or be called the I.C. machine.Liquid-cooled engine is typically provided with a cooling circuit, comprises a radiator, and make between freezing mixture and near the air and carry out heat exchange, for example, near with fans drive in the example of air.Freezing mixture is driven to radiator by flexible hose from internal-combustion engine by the device that is called water pump, is driven to internal-combustion engine from radiator again conversely.Flexible hose can make between internal-combustion engine and the radiator relative movement, and water pump has a turbine that is contained on the live axle, also has a belt pulley.Turbine is installed in the interior chamber of internal-combustion engine, is contained in cylinder block near on the panel of radiator one side.Be embedded with belt on the belt pulley, also through being commonly used to drive generator and fan by the V-type section of crank-driven.Under latter event, may be by an electric clutch, the manipulation that applies according to combustion engine control, or in the scheme of simplifying is experienced manipulation that coolant temperature produces by temperature controller and fan is rotated or is not rotated.

Turbine, live axle and a sealing turbine chamber also are equipped with bearing and assembly independent, that can change of the common composition of the plate of Sealing.Changing common reason is, owing to the impure seepage that causes of chemical substance, dust or freezing mixture, perhaps owing to use for a long time or often improper use, such as the drive belt tension, makes the overload of bearing and Sealing and causes wearing and tearing.

The objective of the invention is prior art is proposed to improve.

According to an aspect of the present invention, provide a kind of cooling unit of liquid-cooled engine, comprised the turbine on a radiator and the drip molding that is contained on the live axle and in the heat sink assembly.

Owing to a cabin is arranged in the radiator tank, be assumed to be the radiator that the freezing mixture Vertical direction flows in this example, this cabin can be used as turbine chamber, and can be with a packaged plate sealing that bearing and Sealing are arranged.Bearing and Sealing are in order to be provided with the common running of live axle.

Preferably live axle is equipped with separately and independent motor, normally a motor.This motor can be handled by combustion engine control or temperature controller.This control that has just proposed a kind of brand-new internal-combustion engine is handled.

Up to now, according to the knowledge of the applicant, only cooling fan is handled by this way.With same or similarly device handle water pump, its meaning is when not needing pump operation, just also do not rise to need carry out the temperature of heat exchange the time when coolant temperature, can save the power of driven pump.Simultaneously, and then quickly the controlling combustion engine temperature rises to the scope of requirement.These factors cause fuel consume to have substantial improvement with respect to the comparable part of known design.In addition, even this device after ignition mechanism is closed, still can continue cooling internal combustion engines, for example can guarantee the non-operating temperature that reaches predetermined.

The drive that does not rely on internal-combustion engine rotational speed can make the pump working rotating speed select by its efficient.For example, when internal-combustion engine is in idling and vehicle stops in traffic, this may wish that water pump moves (establishing this speed variable is a kind of design point that may select) under maximum (top) speed.Otherwise vehicle is advanced, and revolution speed may need lower.In general, this kind arrangement and the common effect that structure arrangement produced are opposite.

Have, though the narration of front only relates to the cooling of internal-combustion engine, same possibility also is present in the purpose that freezing mixture is used for other, for example with the medium of freezing mixture as the vehicle heating equipment again.In this example, can be not need to cool off and need turbo driving or pass through heating equipment, the freezing mixture of turbine drives internal-combustion engine when internal-combustion engine.Simultaneously, the present invention attempts to adopt a plurality of turbines and/or valving to come a minute flowing coolant by different purpose requirements.A plurality of turbines can use in the mode of mode arranged side by side or sequence, therefore in fact can form a multistage pump.Valving corresponding to mode arranged side by side is arranged or share can limit or cut off freezing mixture and flow to radiator, and freezing mixture can be drawn towards other parts of vehicle or internal-combustion engine.

Adopting the another kind of electric motor may scheme be to make a magnetic shaft coupling between turbine and motor, thereby the plate that so has bearing can fully be closed the danger of further having eliminated outside seepage.In the situation that motor damages, motor can be replaced and not influence the integrity of cooling unit.

Yet, when magnetic shaft coupling in development, drive motor can replace with a belt pulley that is embedded with belt, so turbine is a belt drives, such as linking turbine with a magnetic shaft coupling from I. C. engine crankshaft, though this scheme is handled sensitive so rapidly, can think that it is compared with the installation of turbine and water pump with common structure arrangement has some advantages.One aspect of the present invention has comprised this possibility scheme, also comprises the situation of using ordinary straps to drive even without magnetic shaft coupling simultaneously, as long as use the position that the turbine radiator is installed.

As not being provided with the like of turbine chamber or radiator in the water tank, it may be placed in the cabin shell, is connected on the radiator.In this case, chamber also can be made complete parts, and it is removable in case of necessity.

Water tank can have a pump assembly, comprises the structural member of independent casting or die casting and is contained in add-on assemble above it.

With reference to accompanying drawing the present invention is illustrated further:

Fig. 1 is a width of cloth sectional view, the end of a kind of radiator tank that expression the present invention proposes;

Fig. 2 is a kind of different embodiments' a perspective view;

Fig. 3 is a width of cloth exploded view, and expression is used for the parts of Fig. 2 structure;

Fig. 4 is the lateral elevational view of the represented structure arrangement of a width of cloth Fig. 1;

Fig. 5 is the plane view of bottom of a same structure arrangement;

Fig. 6 be a width of cloth from Fig. 4 along VI-sectional drawing that the VI line cuts; And

Fig. 7 is the block diagram of a width of cloth according to cooling unit of the present invention;

At first browse Fig. 1 and Fig. 4 to Fig. 7, wherein illustrated embodiment has a water pump, and it is installed in an end of the water tank 10 of a vehicle radiator that internal-combustion engine is housed.The Sealing of the corresponding embedding of electric drive motor 12 usefulness and Bearing Installation are on an end face of water tank, and Sealing and bearing can be arranged on the water tank and also can be arranged on the drive motor structure.Freezing mixture is sucked from import 14 by axial, in fact coaxial with drive motor, and discharges by outlet 16.In this example, outlet is the section shape that is similar to " 8 " word, and therefore pair of channels is provided.Flow of coolant is by being installed on the live axle 20, and is inclusive in that turbine 18 in the corresponding spiral case causes.

Fig. 7 expresses the process block diagram by cooling unit of the present invention.Can see among the figure that motor 12 and controller 32 such as being a combustion engine control, are connected; This controller and then comprise a thermocouple 34 for the controlling combustion engine temperature.Certainly, can adopt a plurality of thermocouples so that the temperature of control different parts.Correspondingly, controller is used for handling drive motor 12, thereby is implemented to pump by that be fit to and/or predetermined internal-combustion engine rotational speed and/or temperature by turbine 18.

Leaf through below Fig. 2 and Fig. 3, the like among the figure use with Fig. 1 and Fig. 4-6 in used identical coded representation.The motor drive shaft 20 here stretches out perpendicular to the length direction of water tank 10.Lid 24 of motor 12 logotypes, on it for axle 20 is provided with a Sealing, simultaneously closed with covers pump casing 26 formed the spiral case structure that is equivalent among Fig. 1.Turbine chamber forms in pump case, and turbine 18 is in the chamber, and chamber is sealed by lid 24.

Pump case comprises flange plate 28, and its similar flange plate 30 on water tank is spirally connected Face to face.

This will be a kind of appropriate arrangement, the needed any Sealing of electric motor is more simple compared with protruding a belt pulley desired seal part on the axle: see in essence, here the electric motor rotary component that will outwards not protrude, and motor can be by fully " encapsulation ".

Though centrifugal flow formula turbine is used in certain embodiments explanation, this is not in essence, all is possible with the arrangement of axial flow dynamic formula or mixed flow dynamic formula, and the consideration that herein takes up room is main, and centrifugal arrangement may be favourable.

In addition, although the present invention has specified that about the mounting point of turbine in radiator tank it also can be arranged on the diverse location of radiator to satisfy special requirement, particularly considers according to the requirement that takes up room.

Claims

1. a liquid cooling internal-combustion engine cooling unit is made of a radiator assembly parts, it have a radiator and one be contained on the live axle and the drip molding of heat sink assembly on turbine.

2. by the described device of claim 1, wherein, radiator comprises a water tank, and it is well-suited for turbine and forms a chamber.

3. by the described device of claim 2, wherein, this chamber is sealed by a cover plate, for the live axle co-operation, a bearing and a Sealing are housed on the cover plate.

4. by the described device of arbitrary the claim in front, wherein, live axle is equipped with independent and individual other drive unit, and it is a motor preferably, such as an electric motor.

5. by the described device of arbitrary the claim in front, wherein, include a controller, handle the drive unit operation by predetermined engine temperature characteristic.

6. by the described device of claim 5, its middle controller comprises: vehicle internal combustion engine control gear parts and/or include the temperature controller of a control vehicle internal combustion engine temperature.

7. by claim 5 or 6 described devices, wherein, controller can make internal-combustion engine reach the operating temperature of hope before cooling motor starts, and begins to cool down internal-combustion engine this moment again.

8. by claim 5,6 or 7 described devices, wherein, controller makes internal-combustion engine turn off ignition device for internal combustion can also continue to operate afterwards water pump, thereby ensures that internal-combustion engine continues cooling.

9. by the described device of arbitrary the claim in front, wherein, two or more turbines that comprise and/or valving make the freezing mixture shunting, so freezing mixture not necessarily must pass through radiator.

10. by the described device of claim 9, wherein, the two or more turbines that comprise are worked with parallel or mode independent of each other.

11. by claim 9 or 10 described devices, wherein, the two or more turbines that comprise are arranged in the mode of sequence each other, thereby can form a multistage pump.

12. by the described device of arbitrary the claim in front, wherein, turbine is connected by a static relatively coupling with nonmagnetic relatively cover plate magnetic with motor.

13. by the described device of arbitrary the claim in front, wherein, live axle includes a belt pulley, it has one and drive unit, and as I. C. engine crankshaft, the belt of common running makes its running, thereby drives turbine.

14. by the described device of arbitrary the claim in front, wherein, be provided with an independent chamber housing, it can be connected to and make it form complete parts on the radiator.

15. by the described device of arbitrary the claim in front, wherein, be provided with a radiator tank, it has one or more pump parts, such as, chamber, inlet or an outlet just are shaped in manufacture process therein.

16. by the described device of claim 15, wherein, water tank is by casting or casting forming and makes one or more pump parts.