CN103671637A - Oil circuit structure of hydrodynamic retarder and method for lowering no-load loss of hydrodynamic retarder - Google Patents
Oil circuit structure of hydrodynamic retarder and method for lowering no-load loss of hydrodynamic retarder Download PDFInfo
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- 239000012224 working solution Substances 0.000 claims description 28
- 239000000945 filler Substances 0.000 claims description 27
- 239000002828 fuel tank Substances 0.000 claims description 21
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Abstract
The invention discloses an oil circuit structure of a hydrodynamic retarder. The oil circuit structure is formed by a working cavity, a heat exchanger and an oil tank in a sequential communication mode. A bypass valve is arranged on an oil circuit between a bypass port of the working cavity and the heat exchanger. The invention further discloses a method for lowering no-load loss. When the hydrodynamic retarder is in a no-load state, air exists in the working cavity, the bypass valve is opened all the time, the air in the working cavity is driven by a rotor impeller to pass through the bypass valve and an oil inlet of the working cavity to flow back to the working cavity, and a small air flow cycle is formed. As a result, the effect of lowering remnant torque is achieved, the no-load loss of the hydrodynamic retarder is lowered, using cost is lowered, and the using performance of the hydrodynamic retarder is improved at the same time. When the hydrodynamic retarder works, the bypass valve is closed, and therefore the torque of the hydrodynamic retarder is greatly increased.
Description
Technical field
The present invention relates to hydrodynamic retarder, particularly a kind of method of oil channel structures of hydrodynamic retarder and reduction open circuit loss thereof.
Background technique
Hydrodynamic retarder is a kind of complemental brake system for motor vehicle, mainly by stator impeller, impeller of rotor, retarder housing, active chamber, heat exchanger and fuel tank, formed, its essence is a kind of rotary damping device, utilize impeller of rotor to drive working solution and stator impeller to impact, produce reverse vortex moment of torsion, the heat energy that is working solution by the kinetic transformation of vehicle, and then make vehicle deceleration.The working solution of active chamber is under the drive of impeller of rotor, through retarder oil outlet, enter heat exchanger and carry out oil water heat exchange, from filler opening, flow back to active chamber again, thereby the heat energy of working solution is taken away the heat energy of working solution by the mode of cools down by the cooling water from engine-cooling system.
Fig. 1 is the oil channel structures figure of current known hydrodynamic retarder.As shown in Figure 1, it comprises the oil channel structures being formed by active chamber 14, heat exchanger 11 and fuel tank 51 order connections, when hydrodynamic retarder is worked, working solution enters heat exchanger 11 from active chamber 14 through the oil outlet 52 of active chamber and carries out oil water heat exchange, from the filler opening 53 of active chamber, flow back to active chamber 14 again, form a major cycle.
When hydrodynamic retarder quits work, working solution enters heat exchanger 11 from active chamber 14 through oil outlet 52 and flows back to fuel tank 51, now in heat exchanger, store working solution, make gas in active chamber 14 heat exchanger 11 of can not flowing through form recycle gas, thereby the gas that the interior gathering of active chamber 14 is a large amount of, gas in active chamber 14 impacts stator impeller under the drive of impeller of rotor, has produced higher residual torque, has improved the open circuit loss of retarder.
Summary of the invention
One of object of the present invention is, a kind of oil channel structures of hydrodynamic retarder is provided, the high problem of residual torque when solution hydrodynamic retarder is not worked, and reduce its open circuit loss and reduce automobile user cost.
Another object of the present invention is to provide a kind of method that oil channel structures according to this hydrodynamic retarder reduces open circuit loss, when this hydrodynamic retarder is unloaded, air in active chamber is under the drive of impeller of rotor, filler opening through bypass valve and active chamber flows back to active chamber, form short circle air-flow, or also have part air to pass through respectively the oil outlet of bypass valve and active chamber, then through heat exchanger, flow back to active chamber, form another short circle air-flow, to reduce the effect of residual torque, reduce hydrodynamic retarder open circuit loss.
The technological scheme that the present invention adopted is for achieving the above object:
An oil channel structures for hydrodynamic retarder, it comprises by active chamber, heat exchanger and fuel tank and is sequentially communicated with the oil channel structures forming, the by-pass port of this active chamber and the oil circuit between heat exchanger are provided with bypass valve.
The oil outlet of this bypass valve is connected with the filler opening of active chamber.
Described bypass valve comprises valve seat and the valve gap being interlocked, in the valve pocket of this valve seat, be provided with spool, one end of this valve pocket is provided with bypass valve oil outlet, the other end of this valve pocket is provided with sealing surface, the corresponding sealing face of sealed end of this spool, between at least one end of this valve pocket and the sealed end of spool, be provided with a spring, described valve gap is provided with bypass valve oil inlet hole.
Described bypass valve is located in the position, chamber on hydrodynamic retarder housing, between the wall of this valve seat and position, chamber, be provided with some seal rings, described by-pass port is located on the wall of position, chamber and is communicated with this bypass valve oil inlet hole, in this position, chamber, be also provided with a fuel-displaced district being connected with bypass valve oil outlet, this fuel-displaced district is connected with heat exchanger.
On this position, chamber, be also provided with the through hole that a fuel-displaced district is connected, this through hole is connected with the filler opening of active chamber.
Described valve gap is provided with one first pilot hole, and the guide end of this spool is mounted slidably in this first pilot hole, and the end of this valve gap is provided with oil drainage hole.
In described valve pocket, be provided with one second pilot hole, the guide end of this spool is mounted slidably in this second pilot hole.
Described sealing surface is the conical surface, curved surface or plane, and described sealed end is cylindric or spherical shape, is provided with boss or the depression matching with this spring in sealing end.
The oil outlet of this active chamber and the oil circuit between heat exchanger are provided with an oil outlet one-way valve.
A kind of oil channel structures according to aforementioned hydrodynamic retarder reduces the method for open circuit loss, in the time of this hydrodynamic retarder work, working solution enters into active chamber from fuel tank, pressure in active chamber increases gradually, when leading to the working fluid pressure of bypass valve while being greater than the active force of this bypass valve inner spring, the sealed end of spool and the sealing surface of valve seat are closed, thereby bypass valve is shut, now working solution is undertaken after heat exchange by the oil outlet of the active chamber heat exchanger of flowing through, from the filler opening of active chamber, flow back to active chamber formation major cycle again, the moment of torsion that now hydrodynamic retarder produces is maximum;
When this hydrodynamic retarder quits work, working solution in active chamber is Rapid Flow oil sump tank under the drive of the impeller of rotor of hydrodynamic retarder, pressure fast-descending in active chamber, when leading to the working fluid pressure of bypass valve while being less than the active force of this bypass valve inner spring, bypass valve is opened, oil outlet closed check valve now, a small amount of working solution in active chamber flows back to fuel tank from bypass valve, make hydrodynamic retarder residual torque decline rapidly.
When this hydrodynamic retarder is unloaded, active chamber communicates with atmosphere, now bypass valve is in open mode, air in active chamber is under the drive of impeller of rotor, a part of gas passes through respectively the oil outlet of bypass valve and active chamber, then through heat exchanger, flows back to active chamber, forms a short circle air-flow, thereby reduction residual torque, reduces the open circuit loss of this hydrodynamic retarder;
Also have another part gas filler opening by active chamber after bypass valve to flow back to active chamber, form another short circle air-flow, thereby further reduce residual torque, reduce the open circuit loss of this hydrodynamic retarder.
Beneficial effect of the present invention is:
(1) when this hydrodynamic retarder is unloaded, air in active chamber is under the drive of impeller of rotor, filler opening through bypass valve and active chamber flows back to active chamber, forms short circle air-flow, or also has part air to pass through respectively the oil outlet of bypass valve and active chamber, then through heat exchanger, flow back to active chamber, form another short circle air-flow, to reduce the effect of residual torque, reduce hydrodynamic retarder open circuit loss, reduce user's user cost, improved the usability of hydrodynamic retarder simultaneously.
(2) when retarder is worked, bypass valve is shut, and bypass valve oil circuit disconnects, and the moment of torsion of hydrodynamic retarder has been improved greatly.
(3) simplify the structure of hydrodynamic retarder oil circuit, improved retarder oil circuit realizability, and improved the overall performance of hydrodynamic retarder.
(4) reduce the component of hydrodynamic retarder, made retarder compacter, alleviated weight, reduced the cost of hydrodynamic retarder.
Below in conjunction with accompanying drawing and embodiment, the present invention is further described.
Accompanying drawing explanation
Fig. 1 is the oil channel structures schematic diagram of existing known hydrodynamic retarder;
Fig. 2 is hydrodynamic retarder embodiment's 1 of the present invention structural representation;
Fig. 3 is hydrodynamic retarder embodiment's 2,3 of the present invention structural representation;
Fig. 4 is the structural representation of the embodiment of the present invention 1;
Fig. 5 is the structural representation of the embodiment of the present invention 2;
Fig. 6 is structural representation Fig. 1 of the embodiment of the present invention 3;
Fig. 7 is the sectional view of valve gap in the present invention;
Fig. 8 is the left view of valve gap in the present invention;
Fig. 9 is the first structural representation of spool in the embodiment of the present invention 1,3;
Figure 10 is the second structural representation of spool in the embodiment of the present invention 1,3;
Figure 11 is the third structural representation of spool in the embodiment of the present invention 1,3;
Figure 12 is the structural representation of valve seat in the present invention.
Embodiment
Embodiment 1: Fig. 2, Fig. 4 and Fig. 7 to Figure 12 show first embodiment of the present invention, the oil channel structures of a kind of hydrodynamic retarder of the present invention, it comprises the oil channel structures being formed by active chamber 14, heat exchanger 11 and fuel tank 51 order connections, and the by-pass port 13 of this active chamber 14 and the oil circuit between heat exchanger 11 are provided with bypass valve 2.
Described bypass valve 2 comprises valve seat 24 and the valve gap 22 being interlocked, in the valve pocket 132 of this valve seat 24, be provided with spool 23, one end of this valve pocket 132 is provided with bypass valve oil outlet 1321, the other end of this valve pocket 132 is provided with sealing surface, the corresponding sealing face of sealed end 231 of this spool 23, between at least one end of this valve pocket 132 and the sealed end 231 of spool 23, be provided with a spring 6, in the present embodiment, spring 6 is connected in this valve pocket 132 and is provided with between one end of bypass valve oil outlet 1321 and the sealed end 231 of spool 23, and described valve gap 22 is provided with bypass valve oil inlet hole 224.This bypass valve oil inlet hole 224 is 4,6 or 8, and this bypass valve oil inlet hole 224 is arranged on identical graduation circle or different standard pitch circles.
Described bypass valve 2 is located in the position, chamber 52 on hydrodynamic retarder housing, between this valve seat 24 and the wall of position, chamber 52, be provided with some seal rings 25, described by-pass port 13 is located on the wall of position, chamber 52 and is communicated with this bypass valve oil inlet hole 224, in this position, chamber 52, be also provided with a fuel-displaced district 122 being connected with bypass valve oil outlet 1321, this fuel-displaced district 122 is connected with heat exchanger 11.
Described valve gap 22 is provided with one first pilot hole 225, and the guide end 232 of this spool 23 is mounted slidably in this first pilot hole 225, and the end of this valve gap 22 is provided with oil drainage hole 223.
Described sealing surface 245 is the conical surface, curved surface or plane.
Described sealed end 231 is cylindric or spherical shape, is provided with boss 234 or the depression 233 matching with this spring 6 in sealing end 231.
As shown in Figure 9, sealing end 231 is cylindric, and sealing end 231 is provided with depression 233, as shown in figure 10, sealing end 231 is spherical shape, and sealing end 231 is provided with depression 233, as shown in figure 11, sealing end 231 is spherical shape, and sealing end 231 is provided with boss 234.
Filler opening 53 and the oil circuit between fuel tank 51 of this active chamber 14 are provided with a filler opening one-way valve 4.
A kind of oil channel structures according to aforementioned hydrodynamic retarder reduces the method for open circuit loss, in the time of this hydrodynamic retarder work, working solution enters into active chamber 14 from fuel tank 51, pressure in active chamber 14 increases gradually, when leading to the working fluid pressure of bypass valve 2 while being greater than the active force of these bypass valve 2 inner springs 6, the sealed end 231 of spool 23 is closed with the sealing surface of valve seat 24, thereby bypass valve 2 is shut, now working solution is undertaken after heat exchange by the oil outlet 52 of active chamber 14 heat exchanger 11 of flowing through, from the filler opening 53 of active chamber 14, flow back to active chamber 14 formation major cycle again, the moment of torsion that now hydrodynamic retarder produces is maximum,
When this hydrodynamic retarder quits work, the working solution that active chamber is 14 li is Rapid Flow oil sump tank 51 under the drive of the impeller of rotor of hydrodynamic retarder, pressure fast-descending in active chamber 14, when leading to the working fluid pressure of bypass valve 2 while being less than the active force of these bypass valve 2 inner springs 6, bypass valve 2 is opened, now oil outlet one-way valve 3 is closed, a small amount of working solution in active chamber 14 flows back to fuel tank 51 from bypass valve 2, make hydrodynamic retarder residual torque decline rapidly, reduce the open circuit loss of this hydrodynamic retarder.
When this hydrodynamic retarder is unloaded, active chamber 14 communicates with atmosphere, now bypass valve 2 is in open mode, air in active chamber 14 is under the drive of impeller of rotor, a part of gas passes through respectively the oil outlet 52 of bypass valve 2 and active chamber 14, then through heat exchanger 11, flow back to active chamber 14, form a short circle air-flow; Thereby reduction residual torque, reduces the open circuit loss of this hydrodynamic retarder.
(1) when this hydrodynamic retarder is unloaded, air in active chamber 14 is under the drive of impeller of rotor, filler opening 53 through bypass valve 2 and active chamber 14 flows back to active chamber 14, form short circle air-flow, to reduce the effect of residual torque, reduce hydrodynamic retarder open circuit loss, reduced user's user cost, improved the usability of hydrodynamic retarder simultaneously.
(2) when retarder is worked, bypass valve 2 is shut, and bypass valve 2 oil circuits disconnect, and the moment of torsion of hydrodynamic retarder has been improved greatly.
(3) simplify the structure of hydrodynamic retarder oil circuit, improved retarder oil circuit realizability, and improved the overall performance of hydrodynamic retarder.
(4) reduce the component of hydrodynamic retarder, made retarder compacter, alleviated weight, reduced the cost of hydrodynamic retarder.
embodiment 2:fig. 2 and Fig. 5 show second embodiment of the present invention, the oil channel structures of a kind of hydrodynamic retarder of the present invention, it comprises the oil channel structures being formed by active chamber 14, heat exchanger 11 and fuel tank 51 order connections, and the by-pass port 13 of this active chamber 14 and the oil circuit between heat exchanger 11 are provided with bypass valve 2.
Described bypass valve 2 comprises valve seat 24 and the valve gap 22 being interlocked, in the valve pocket 132 of this valve seat 24, be provided with spool 23, one end of this valve pocket 132 is provided with bypass valve oil outlet 1321, the other end of this valve pocket 132 is provided with sealing surface, the corresponding sealing face of sealed end 231 of this spool 23, between at least one end of this valve pocket 132 and the sealed end 231 of spool 23, be provided with a spring 6, in the present embodiment, spring 6 is connected in this valve pocket 132 and is provided with between one end of bypass valve oil outlet 1321 and the sealed end 231 of spool 23, and described valve gap 22 is provided with bypass valve oil inlet hole 224.This bypass valve oil inlet hole 224 is 4,6 or 8, and this bypass valve oil inlet hole 224 is arranged on identical graduation circle or different standard pitch circles.
Described bypass valve 2 is located in the position, chamber 52 on hydrodynamic retarder housing, between this valve seat 24 and the wall of position, chamber 52, be provided with some seal rings 25, described by-pass port 13 is located on the wall of position, chamber 52 and is communicated with this bypass valve oil inlet hole 224, in this position, chamber 52, be also provided with a fuel-displaced district 122 being connected with bypass valve oil outlet 1321, this fuel-displaced district 122 is connected with heat exchanger 11.
In described valve pocket 132, be provided with one second pilot hole, the guide end 232 of this spool 23 is mounted slidably in this second pilot hole.
Described sealing surface 245 is the conical surface, curved surface or plane.
Described sealed end 231 is cylindric or spherical shape, is provided with boss 234 or the depression 233 matching with this spring 6 in sealing end 231.
As shown in Figure 9, sealing end 231 is cylindric, and sealing end 231 is provided with depression 233, as shown in figure 10, sealing end 231 is spherical shape, and sealing end 231 is provided with depression 233, as shown in figure 11, sealing end 231 is spherical shape, and sealing end 231 is provided with boss 234.
A kind of oil channel structures according to aforementioned hydrodynamic retarder reduces the method for open circuit loss, in the time of this hydrodynamic retarder work, working solution enters into active chamber 14 from fuel tank 51, pressure in active chamber 14 increases gradually, when leading to the working fluid pressure of bypass valve 2 while being greater than the active force of these bypass valve 2 inner springs 6, the sealed end 231 of spool 23 is closed with the sealing surface of valve seat 24, thereby bypass valve 2 is shut, now working solution is undertaken after heat exchange by the oil outlet 52 of active chamber 14 heat exchanger 11 of flowing through, from the filler opening 53 of active chamber 14, flow back to active chamber 14 formation major cycle again, the moment of torsion that now hydrodynamic retarder produces is maximum,
When this hydrodynamic retarder quits work, the working solution that active chamber is 14 li is Rapid Flow oil sump tank 51 under the drive of the impeller of rotor of hydrodynamic retarder, pressure fast-descending in active chamber 14, when leading to the working fluid pressure of bypass valve 2 while being less than the active force of these bypass valve 2 inner springs 6, bypass valve 2 is opened, now oil outlet one-way valve 3 is closed, a small amount of working solution in active chamber 14 flows back to fuel tank 51 from bypass valve 2, make hydrodynamic retarder residual torque decline rapidly, reduce the open circuit loss of this hydrodynamic retarder.
When this hydrodynamic retarder is unloaded, active chamber 14 communicates with atmosphere, now bypass valve 2 is in open mode, air in active chamber 14 is under the drive of impeller of rotor, a part of gas passes through respectively the oil outlet 52 of bypass valve 2 and active chamber 14, then through heat exchanger 11, flows back to active chamber 14, forms a short circle air-flow, thereby reduction residual torque, reduces the open circuit loss of this hydrodynamic retarder.
(1) when this hydrodynamic retarder is unloaded, air in active chamber 14 is under the drive of impeller of rotor, filler opening 53 through bypass valve 2 and active chamber 14 flows back to active chamber 14, form short circle air-flow, to reduce the effect of residual torque, reduce hydrodynamic retarder open circuit loss, reduced user's user cost, improved the usability of hydrodynamic retarder simultaneously.
(2) when retarder is worked, bypass valve 2 is shut, and bypass valve 2 oil circuits disconnect, and the moment of torsion of hydrodynamic retarder has been improved greatly.
(3) simplify the structure of hydrodynamic retarder oil circuit, improved retarder oil circuit realizability, and improved the overall performance of hydrodynamic retarder.
(4) reduce the component of hydrodynamic retarder, made retarder compacter, alleviated weight, reduced the cost of hydrodynamic retarder.
embodiment 3:fig. 3, Fig. 6 and Fig. 7 to Figure 11 show the 3rd embodiment of the present invention, the oil channel structures of a kind of hydrodynamic retarder of the present invention, it comprises the oil channel structures being formed by active chamber 14, heat exchanger 11 and fuel tank 51 order connections, and the by-pass port 13 of this active chamber 14 and the oil circuit between heat exchanger 11 are provided with bypass valve 2.The oil outlet of this bypass valve 2 is connected with the filler opening 53 of active chamber 14.
Described bypass valve 2 comprises valve seat 24 and the valve gap 22 being interlocked, in the valve pocket 132 of this valve seat 24, be provided with spool 23, one end of this valve pocket 132 is provided with bypass valve oil outlet 1321, the other end of this valve pocket 132 is provided with sealing surface, the corresponding sealing face of sealed end 231 of this spool 23, between at least one end of this valve pocket 132 and the sealed end 231 of spool 23, be provided with a spring 6, in the present embodiment, spring 6 is connected in this valve pocket 132 and is provided with between one end of bypass valve oil outlet 1321 and the sealed end 231 of spool 23, and described valve gap 22 is provided with bypass valve oil inlet hole 224.This bypass valve oil inlet hole 224 is 4,6 or 8, and this bypass valve oil inlet hole 224 is arranged on identical graduation circle or different standard pitch circles.
Described bypass valve 2 is located in the position, chamber 52 on hydrodynamic retarder housing, between this valve seat 24 and the wall of position, chamber 52, be provided with some seal rings 25, described by-pass port 13 is located on the wall of position, chamber 52 and is communicated with this bypass valve oil inlet hole 224, in this position, chamber 52, be also provided with a fuel-displaced district 122 being connected with bypass valve oil outlet 1321, this fuel-displaced district 122 is connected with heat exchanger 11.
On this position, chamber 52, be also provided with the through hole 121 that a fuel-displaced district 122 is connected, this through hole 121 is connected with the filler opening 53 of active chamber 14.
Described valve gap 22 is provided with one first pilot hole 225, and the guide end 232 of this spool 23 is mounted slidably in this first pilot hole 225, and the end of this valve gap 22 is provided with oil drainage hole 223.
Described sealing surface is the conical surface, curved surface or plane.
Described sealed end 231 is cylindric or spherical shape, is provided with boss 234 or the depression 233 matching with this spring 6 in sealing end 231.
As shown in Figure 9, sealing end 231 is cylindric, and sealing end 231 is provided with depression 233, as shown in figure 10, sealing end 231 is spherical shape, and sealing end 231 is provided with depression 233, as shown in figure 11, sealing end 231 is spherical shape, and sealing end 231 is provided with boss 234.
A kind of oil channel structures according to aforementioned hydrodynamic retarder reduces the method for open circuit loss, in the time of this hydrodynamic retarder work, working solution enters into active chamber 14 from fuel tank 51, pressure in active chamber 14 increases gradually, when leading to the working fluid pressure of bypass valve 2 while being greater than the active force of these bypass valve 2 inner springs 6, the sealed end 231 of spool 23 is closed with the sealing surface of valve seat 24, thereby bypass valve 2 is shut, now working solution is undertaken after heat exchange by the oil outlet 52 of active chamber 14 heat exchanger 11 of flowing through, from the filler opening 53 of active chamber 14, flow back to active chamber 14 formation major cycle again, the moment of torsion that now hydrodynamic retarder produces is maximum,
When this hydrodynamic retarder quits work, the working solution that active chamber is 14 li is Rapid Flow oil sump tank 51 under the drive of the impeller of rotor of hydrodynamic retarder, pressure fast-descending in active chamber 14, when leading to the working fluid pressure of bypass valve 2 while being less than the active force of these bypass valve 2 inner springs 6, bypass valve 2 is opened, now oil outlet one-way valve 3 is closed, a small amount of working solution in active chamber 14 flows back to fuel tank 51 from bypass valve 2, make hydrodynamic retarder residual torque decline rapidly, reduce the open circuit loss of this hydrodynamic retarder.
When this hydrodynamic retarder is unloaded, active chamber 14 communicates with atmosphere, now bypass valve 2 is in open mode, air in active chamber 14 is under the drive of impeller of rotor, a part of gas passes through respectively the oil outlet 52 of bypass valve 2 and active chamber 14, then through heat exchanger 11, flow back to active chamber 14, form a short circle air-flow; Also have another part gas filler opening 53 by active chamber 14 after bypass valve 2 to flow back to active chamber 14, form another short circle air-flow, thereby reduce residual torque, reduce the open circuit loss of this hydrodynamic retarder.
(1) when this hydrodynamic retarder is unloaded, air in active chamber 14 is under the drive of impeller of rotor, filler opening 53 through bypass valve 2 and active chamber 14 flows back to active chamber 14, form short circle air-flow, also have part air to pass through respectively the oil outlet 52 of bypass valve 2 and active chamber 14, then through heat exchanger 11, flow back to active chamber 14, form another short circle air-flow, to reduce the effect of residual torque, reduce hydrodynamic retarder open circuit loss, reduce user's user cost, improved the usability of hydrodynamic retarder simultaneously.
(2) when retarder is worked, bypass valve 2 is shut, and bypass valve 2 oil circuits disconnect, and the moment of torsion of hydrodynamic retarder has been improved greatly.
(3) simplify the structure of hydrodynamic retarder oil circuit, improved retarder oil circuit realizability, and improved the overall performance of hydrodynamic retarder.
(4) reduce the component of hydrodynamic retarder, made retarder compacter, alleviated weight, reduced the cost of hydrodynamic retarder.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the claims in the present invention scope change and modify, and all should belong to the covering scope of the claims in the present invention.
Claims (12)
1. an oil channel structures for hydrodynamic retarder, it comprises by active chamber, heat exchanger, fuel tank and is sequentially communicated with the oil channel structures forming, and it is characterized in that: the by-pass port of this active chamber and the oil circuit between heat exchanger are provided with bypass valve.
2. the oil channel structures of hydrodynamic retarder according to claim 1, is characterized in that, the oil outlet of this bypass valve is connected with the filler opening of active chamber.
3. according to the oil channel structures of hydrodynamic retarder described in claim 1 or 2, it is characterized in that, described bypass valve comprises valve seat and the valve gap being interlocked, in the valve pocket of this valve seat, be provided with spool, one end of this valve pocket is provided with bypass valve oil outlet, and the other end of this valve pocket is provided with sealing surface, the corresponding sealing face of sealed end of this spool, between at least one end of this valve pocket and the sealed end of spool, be provided with a spring, described valve gap is provided with bypass valve oil inlet hole.
4. the oil channel structures of hydrodynamic retarder according to claim 3, it is characterized in that, described bypass valve is located in the position, chamber on hydrodynamic retarder housing, between the wall of this valve seat and position, chamber, be provided with some seal rings, described by-pass port is located on the wall of position, chamber and is communicated with this bypass valve oil inlet hole, in this position, chamber, be also provided with a fuel-displaced district being connected with bypass valve oil outlet, this fuel-displaced district is connected with heat exchanger.
5. the oil channel structures of hydrodynamic retarder according to claim 4, is characterized in that, on this position, chamber, be also provided with the through hole that a fuel-displaced district is connected, this through hole is connected with the filler opening of active chamber.
6. the oil channel structures of hydrodynamic retarder according to claim 3, is characterized in that, described valve gap is provided with one first pilot hole, and the guide end of this spool is mounted slidably in this first pilot hole, and the end of this valve gap is provided with oil drainage hole.
7. the oil channel structures of hydrodynamic retarder according to claim 3, is characterized in that, in described valve pocket, be provided with one second pilot hole, the guide end of this spool is mounted slidably in this second pilot hole.
8. the oil channel structures of hydrodynamic retarder according to claim 3, is characterized in that, described sealing surface is the conical surface, curved surface or plane, and described sealed end is cylindric or spherical shape, is provided with boss or the depression matching with this spring in sealing end.
9. the oil channel structures of hydrodynamic retarder according to claim 1, is characterized in that, the oil outlet of this active chamber and the oil circuit between heat exchanger are provided with an oil outlet one-way valve.
One kind according to claim 1 the oil channel structures of hydrodynamic retarder reduce the method for open circuit loss, it is characterized in that: in the time of this hydrodynamic retarder work, working solution enters into active chamber from fuel tank, pressure in active chamber increases gradually, when leading to the working fluid pressure of bypass valve while being greater than the active force of this bypass valve inner spring, the sealed end of spool and the sealing surface of valve seat are closed, thereby bypass valve is shut, now working solution is undertaken after heat exchange by the oil outlet of the active chamber heat exchanger of flowing through, from the filler opening of active chamber, flow back to active chamber formation major cycle again, the moment of torsion that now hydrodynamic retarder produces is maximum,
When this hydrodynamic retarder quits work, working solution in active chamber is Rapid Flow oil sump tank under the drive of the impeller of rotor of hydrodynamic retarder, pressure fast-descending in active chamber, when leading to the working fluid pressure of bypass valve while being less than the active force of this bypass valve inner spring, bypass valve is opened, oil outlet closed check valve now, a small amount of working solution in active chamber flows back to fuel tank from bypass valve, make hydrodynamic retarder residual torque decline rapidly.
11. reduce the method for open circuit loss according to claim 10, it is characterized in that, when this hydrodynamic retarder is unloaded, active chamber communicates with atmosphere, and now bypass valve is in open mode, air in active chamber is under the drive of impeller of rotor, a part of gas passes through respectively the oil outlet of bypass valve and active chamber, then through heat exchanger, flows back to active chamber, forms a short circle air-flow, thereby further reduce residual torque, reduce the open circuit loss of this hydrodynamic retarder.
12. according to the method that reduces open circuit loss described in claim 11, it is characterized in that also having another part gas filler opening by active chamber after bypass valve to flow back to active chamber, form another short circle air-flow, thereby further reduce residual torque, reduce the open circuit loss of this hydrodynamic retarder.
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| CN102996686A (en) * | 2012-12-04 | 2013-03-27 | 华南农业大学 | Oil-way structure for eliminating air-fuel mixture of hydrodynamic retarder and working method of oil-way structure |
| CN202946896U (en) * | 2012-10-29 | 2013-05-22 | 陕西法士特齿轮有限责任公司 | Pressure valve used for hydro-mechanical idling lubrication |
| CN103335038A (en) * | 2013-06-24 | 2013-10-02 | 宁波华盛汽车部件有限公司 | Hydraulic oil regulating device in hydrodynamic retarder |
| CN203431068U (en) * | 2013-09-10 | 2014-02-12 | 深圳市特尔佳科技股份有限公司 | Hydraulic retarder oil circuit structure for reducing no-load loss |
| CN103717463A (en) * | 2012-03-07 | 2014-04-09 | 沃依特专利有限责任公司 | Hydrodynamic retarder and method for controlling the power transmission of such a retarder |
| CN104613106A (en) * | 2015-02-15 | 2015-05-13 | 陕西法士特齿轮有限责任公司 | Oil liquid circulation system of hydrodynamic retarder |
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| GB842145A (en) * | 1955-10-05 | 1960-07-20 | Applic Mach Motrices | A hydro dynamic brake |
| DE10248054A1 (en) * | 2002-10-15 | 2004-05-06 | Voith Turbo Gmbh & Co. Kg | Hydrodynamic brake system has retarder of HGV, external working medium circuit, outlet valve with externally controllable opening/closing arrangement to enable outlet valve closing pressure to be altered |
| CN103717463A (en) * | 2012-03-07 | 2014-04-09 | 沃依特专利有限责任公司 | Hydrodynamic retarder and method for controlling the power transmission of such a retarder |
| CN202545655U (en) * | 2012-04-23 | 2012-11-21 | 陕西法士特齿轮有限责任公司 | Hydraulic retarder |
| CN202946896U (en) * | 2012-10-29 | 2013-05-22 | 陕西法士特齿轮有限责任公司 | Pressure valve used for hydro-mechanical idling lubrication |
| CN102996686A (en) * | 2012-12-04 | 2013-03-27 | 华南农业大学 | Oil-way structure for eliminating air-fuel mixture of hydrodynamic retarder and working method of oil-way structure |
| CN103335038A (en) * | 2013-06-24 | 2013-10-02 | 宁波华盛汽车部件有限公司 | Hydraulic oil regulating device in hydrodynamic retarder |
| CN203431068U (en) * | 2013-09-10 | 2014-02-12 | 深圳市特尔佳科技股份有限公司 | Hydraulic retarder oil circuit structure for reducing no-load loss |
| CN104613106A (en) * | 2015-02-15 | 2015-05-13 | 陕西法士特齿轮有限责任公司 | Oil liquid circulation system of hydrodynamic retarder |
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| Publication number | Publication date |
|---|---|
| CN103671637B (en) | 2017-05-03 |
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