CN211778275U - Hydraulic control system and hybrid electric vehicle with same - Google Patents
Hydraulic control system and hybrid electric vehicle with same Download PDFInfo
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- CN211778275U CN211778275U CN202020396520.XU CN202020396520U CN211778275U CN 211778275 U CN211778275 U CN 211778275U CN 202020396520 U CN202020396520 U CN 202020396520U CN 211778275 U CN211778275 U CN 211778275U
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Abstract
The utility model provides a hydraulic control system and hybrid vehicle who has it, wherein, hydraulic control system includes: the power unit comprises a power unit, a clutch driving unit, a gear selecting driving unit, a gear shifting driving unit and a motor gear shifting driving unit, wherein the power unit is used for providing working oil for the clutch driving unit, the gear selecting driving unit, the gear shifting driving unit and the motor gear shifting driving unit through an oil inlet pipe, and the clutch driving unit, the gear selecting driving unit, the gear shifting driving unit and the motor gear shifting driving unit flow the oil back to the power unit through an oil return pipe. The utility model can realize the functions of combination/separation of the main clutch, gear selection, gear shifting, switching of high and low gears of the motor and the like in the hybrid electric vehicle transmission; an energy accumulator is arranged in the hydraulic control system to alleviate pressure impact and realize stable pressure.
Description
Technical Field
The utility model relates to a vehicle field, concretely relates to hydraulic control system and have its hybrid vehicle.
Background
As a new energy automobile, the hybrid electric vehicle can obtain excellent performance and economy due to the fact that an engine, a driving motor and a generator of the hybrid electric vehicle are located in a high-efficiency working area, and is favored by host factories and consumers. The main clutch combination/separation, gear selection and shifting, and the switching of high and low gears of the motor in the hybrid electric vehicle transmission are the most basic functions, and at present, two control modes can realize the functions, namely a hydraulic control system and an electromechanical control system. However, the prior art mostly controls the switching of different clutches and brakes, and lubricates and cools the system, and there is little description about specific gear selecting and shifting and high and low gear shifting of the motor.
The utility model discloses a utility model patent with application publication number CN208153452U discloses a hybrid electric vehicle transmission hydraulic control system, which comprises an oil supply system, a first function pump which is communicated with the oil supply system and realizes high pressure and low flow, and a second function pump which realizes low pressure and high flow, wherein the first function pump is communicated with a clutch control system and a gear control system; the output end of the second function pump is communicated with the input end of the electromagnetic valve, and the output end of the electromagnetic valve is respectively communicated with the output end of the first function pump and the input end of the lubricating and cooling system. The utility model discloses an adopt two sets of oil pumps to come the fuel feeding for the system, the combination/separation of the clutch of steerable three groups to and the switching that the control kept off the position, and can realize the lubricated cooling of derailleur, but does not describe how to realize keeping off the position control systematically, and this system has great design redundancy.
Therefore, a new hydraulic control system for a transmission needs to be developed.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a hydraulic control system and have its hybrid vehicle can overcome present partial for hybrid vehicle derailleur, adopts motor control's lever to realize selecting the fender and shift gears and produce the problem that great shift is strikeed easily.
In order to solve the technical problem, the utility model discloses a following technical scheme:
according to the utility model discloses hydraulic control system of first aspect embodiment, include: the automatic transmission comprises a power unit, a clutch driving unit, a gear selecting driving unit, a gear shifting driving unit and a motor gear shifting driving unit, wherein the power unit provides working oil for the clutch driving unit, the gear selecting driving unit, the gear shifting driving unit and the motor gear shifting driving unit through oil inlet pipes, and the clutch driving unit, the gear selecting driving unit, the gear shifting driving unit and the motor gear shifting driving unit flow the oil back to the power unit through oil return pipes;
the power unit comprises an oil tank, a first oil filter, an oil pump, a second oil filter, a one-way valve and an energy accumulator which are sequentially connected through an oil pipe, the clutch driving unit, the gear selecting driving unit, the gear shifting driving unit and the motor gear shifting driving unit return oil to the oil tank through an oil return pipe, the oil pump is driven by a motor, the first oil filter and the second oil filter are respectively communicated with an oil suction port and an oil discharge port of the oil pump, the second oil filter is provided with a bypass valve in parallel, and a pipeline positioned at the oil discharge port of the one-way valve is provided with a pressure sensor.
Further, the clutch driving unit comprises a three-position three-way electromagnetic directional valve I and a clutch driving oil cylinder communicated with the three-position three-way electromagnetic directional valve I, a clutch driving piston is arranged in the clutch driving oil cylinder in a sliding mode, a spring I is arranged on the clutch driving piston and provides reset elastic force for the clutch driving piston, an oil suction port of the three-position three-way electromagnetic directional valve I is communicated with an oil discharge port of the one-way valve, and an oil return port of the three-position three-way electromagnetic directional valve I is communicated with the oil tank through an oil return pipe.
Furthermore, the gear selection driving unit comprises a three-position three-way electromagnetic reversing valve II and a gear selection driving oil cylinder communicated with the three-position three-way electromagnetic reversing valve II, a gear selection driving piston is arranged in the gear selection driving oil cylinder in a sliding mode, a spring II is arranged on the gear selection driving piston to provide reset elasticity for the gear selection driving piston, an oil suction port of the three-position three-way electromagnetic reversing valve II is communicated with an oil discharge port of the one-way valve, and an oil return port of the three-position three-way electromagnetic reversing valve II is communicated with the oil tank through an oil return pipe.
Further, the gear shifting driving unit comprises a two-position three-way electromagnetic directional valve I, a two-position three-way electromagnetic directional valve II and two gear shifting driving oil cylinders arranged side by side, two ends of a gear shifting driving piston are respectively arranged in the two gear shifting driving oil cylinders in a sliding mode, a gear shifting driving rocker arm is arranged in the middle of the gear shifting driving piston, an oil discharge port of the two-position three-way electromagnetic directional valve I is communicated with one gear shifting driving oil cylinder through an oil pipe, an oil discharge port of the two-position three-way electromagnetic directional valve II is communicated with the other gear shifting driving oil cylinder through an oil pipe, oil suction ports of the two-position three-way electromagnetic directional valve I and the two-position three-way electromagnetic directional valve II are communicated with an oil discharge port of the one-way valve, and oil return ports of the two-position three.
Furthermore, the motor gear shifting driving unit comprises a two-position three-way electromagnetic directional valve III, a two-position three-way electromagnetic directional valve IV and two motor gear shifting driving oil cylinders arranged side by side, two ends of a motor gear shifting driving piston are respectively arranged in the two motor gear shifting driving oil cylinders in a sliding manner, the middle part of the motor gear shifting driving piston is provided with a motor gear shifting driving rocker arm, an oil outlet of the two-position three-way electromagnetic directional valve III is communicated with a motor gear shifting driving oil cylinder through an oil pipe, an oil discharge port of the two-position three-way electromagnetic directional valve IV is communicated with another motor gear shifting driving oil cylinder through an oil pipe, the oil suction ports of the two-position three-way electromagnetic directional valve III and the two-position three-way electromagnetic directional valve IV are communicated with the oil discharge port of the one-way valve, and oil return ports of the two-position three-way electromagnetic reversing valve III and the two-position three-way electromagnetic reversing valve IV are communicated with the oil tank through oil return pipes.
Further, a position sensor I is arranged on the clutch driving piston to monitor the displacement of the clutch driving piston.
Furthermore, a position sensor II is arranged on the gear selection driving piston to monitor the displacement of the gear selection driving piston.
Further, a position sensor III is arranged in the middle of the gear shifting driving piston to monitor the displacement of the gear shifting driving piston.
Furthermore, a position sensor IV is arranged in the middle of the motor gear-shifting driving piston to monitor the displacement of the motor gear-shifting driving piston.
According to the utility model discloses hybrid vehicle of second aspect embodiment includes the hydraulic control system of above-mentioned embodiment.
The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:
the utility model discloses in the derailleur for the partial hybrid vehicle at present, adopt motor control's lever to realize selecting the fender and shift, though the structure is comparatively simple, but can produce the great problem of shifting the impact, provide a hydraulic control system, include: the power unit comprises a power unit, a clutch driving unit, a gear selecting driving unit, a gear shifting driving unit and a motor gear shifting driving unit, wherein the power unit is used for providing working oil for the clutch driving unit, the gear selecting driving unit, the gear shifting driving unit and the motor gear shifting driving unit through an oil inlet pipe, and the clutch driving unit, the gear selecting driving unit, the gear shifting driving unit and the motor gear shifting driving unit flow the oil back to the power unit through an oil return pipe. Wherein, the power unit comprises an oil tank, a first oil filter, an oil pump, a second oil filter, a one-way valve and an energy accumulator which are sequentially connected through an oil pipe, the clutch driving unit, the gear selecting driving unit, the gear shifting driving unit and the motor gear shifting driving unit return oil to the oil tank through an oil return pipe, the oil pump is driven by a motor and provides oil with certain pressure and flow for a hydraulic control system, the first oil filter and the second oil filter are respectively communicated with an oil suction port and an oil discharge port of the oil pump, the second oil filter is provided with a bypass valve in parallel so that the oil can supply oil to the system through the bypass valve when the second oil filter is blocked, a pressure sensor is arranged on a pipeline at the oil discharge port of the one-way valve and used for monitoring the pressure of the system so as to control the start and stop of the motor, the one-way valve is arranged to prevent the oil from, so as to alleviate the pressure impact of the system and realize more stable pressure.
The clutch driving unit comprises a three-position three-way electromagnetic directional valve I and a clutch driving oil cylinder communicated with the three-position three-way electromagnetic directional valve I, a clutch driving piston is arranged in the clutch driving oil cylinder in a sliding mode, a spring I is arranged on the clutch driving piston and provides reset elastic force for the clutch driving piston, an oil suction port of the three-position three-way electromagnetic directional valve I is communicated with an oil discharge port of the one-way valve, and an oil return port of the three-position three-way electromagnetic directional valve I is communicated with the oil tank through an oil return pipe.
And a position sensor I is arranged on the clutch driving piston to monitor the displacement of the clutch driving piston. Therefore, when the three-position three-way electromagnetic reversing valve I is in the right position, oil with certain pressure flows in from the lower part of the clutch driving oil cylinder, acts on the lower surface of the clutch driving piston, overcomes the spring force of the spring I, pushes the clutch driving piston to move upwards, and when the clutch driving piston moves upwards to a sufficient stroke, the clutch is completely separated. When the three-position three-way electromagnetic directional valve I is in the middle position, the clutch drives the piston to be in a balanced state. When the three-position three-way electromagnetic directional valve I is in a left position, the clutch drives the piston to move downwards under the action of the clutch diaphragm spring and the spring I, oil is pushed back into the oil tank, and the clutch is in a combined state. The position sensor I is arranged for monitoring the displacement of the clutch driving piston, so that the accurate control of the clutch combination/separation is realized, and good clutch performance is achieved.
The gear selecting driving unit comprises a three-position three-way electromagnetic reversing valve II and a gear selecting driving oil cylinder communicated with the three-position three-way electromagnetic reversing valve II, a gear selecting driving piston is arranged in the gear selecting driving oil cylinder in a sliding mode, a spring II is arranged on the gear selecting driving piston to provide reset elastic force for the gear selecting driving piston, an oil suction port of the three-position three-way electromagnetic reversing valve II is communicated with an oil discharge port of the one-way valve, and an oil return port of the three-position three-way electromagnetic reversing valve II is communicated with the oil tank through an oil return pipe.
And a position sensor II is arranged on the gear selection driving piston to monitor the displacement of the gear selection driving piston. Therefore, when the three-position three-way electromagnetic directional valve II is in the right position, oil with certain pressure flows in from the upper part of the gear selection driving oil cylinder and acts on the upper surface of the gear selection driving piston to overcome the spring force of the spring II and push the gear selection driving piston to move downwards, and gear selection of gear shifting is achieved. When the three-position three-way electromagnetic directional valve II is in the middle position, the gear selection driving piston is in a balanced state and can be kept in a certain gear. When the three-position three-way electromagnetic directional valve II is in the left position, the gear selection driving piston moves upwards under the action of the spring II, oil is pushed back into the oil tank, and gear selection of gear reduction is achieved. And a position sensor II is arranged for monitoring the displacement of the gear selection driving piston so as to realize the accurate control of the gear selection position and achieve good gear selection performance.
The gear shifting driving unit comprises a two-position three-way electromagnetic directional valve I, a two-position three-way electromagnetic directional valve II and two gear shifting driving oil cylinders arranged side by side, two ends of a gear shifting driving piston are respectively arranged in the two gear shifting driving oil cylinders in a sliding mode, a gear shifting driving rocker arm is arranged in the middle of the gear shifting driving piston, an oil discharge port of the two-position three-way electromagnetic directional valve I is communicated with one gear shifting driving oil cylinder through an oil pipe, the two-position three-way electromagnetic directional valve II is communicated with the other gear shifting driving oil cylinder through an oil pipe, oil suction ports of the two-position three-way electromagnetic directional valve I and the two-position three-way electromagnetic directional valve II are communicated with an oil discharge port of the one-way valve, and oil return ports of the two-position three-way.
And a position sensor III is arranged in the middle of the gear shifting driving piston. Therefore, when the two-position three-way electromagnetic directional valve II is located at the right position and the two-position three-way electromagnetic directional valve I is located at the left position, oil with certain pressure flows in from the right side of the gear shifting driving oil cylinder, flows out from the left side of the gear shifting driving oil cylinder, acts on the right side end face of the gear shifting driving piston, pushes the gear shifting driving piston to move leftwards, moves leftwards at the lower end of the gear shifting driving rocker arm, and inclines rightwards at an angle at the upper end of the gear shifting driving rocker arm to realize shifting. When the two-position three-way electromagnetic directional valve I and the two-position three-way electromagnetic directional valve II are both in the left position or the right position, the gear shifting driving piston is in a balanced state and can be kept in the middle position. When the two-position three-way electromagnetic directional valve II is in the left position and the two-position three-way electromagnetic directional valve I is in the right position, oil with certain pressure flows in from the left side of the gear shifting driving oil cylinder, flows out from the right side of the gear shifting driving oil cylinder, acts on the left side end face of the gear shifting driving piston, pushes the gear shifting driving piston to move rightwards, the lower end of the gear shifting driving rocker arm moves rightwards, the upper end of the gear shifting driving rocker arm inclines leftwards by an angle, and the gear shifting into an. And a position sensor III is arranged for monitoring the displacement of the gear shifting driving piston so as to realize the accurate control of the gear shifting position and achieve good gear shifting performance.
Wherein the motor gear shifting driving unit comprises a two-position three-way electromagnetic directional valve III, a two-position three-way electromagnetic directional valve IV and two motor gear shifting driving oil cylinders arranged side by side, two ends of a motor gear shifting driving piston are respectively arranged in the two motor gear shifting driving oil cylinders in a sliding manner, the middle part of the motor gear shifting driving piston is provided with a motor gear shifting driving rocker arm, an oil outlet of the two-position three-way electromagnetic directional valve III is communicated with a motor gear shifting driving oil cylinder through an oil pipe, an oil discharge port of the two-position three-way electromagnetic directional valve IV is communicated with another motor gear shifting driving oil cylinder through an oil pipe, the oil suction ports of the two-position three-way electromagnetic directional valve III and the two-position three-way electromagnetic directional valve IV are communicated with the oil discharge port of the one-way valve, and oil return ports of the two-position three-way electromagnetic reversing valve III and the two-position three-way electromagnetic reversing valve IV are communicated with the oil tank through oil return pipes.
And a position sensor IV is arranged in the middle of the motor gear-shifting driving piston. Therefore, when the two-position three-way electromagnetic directional valve III is located at the right position and the two-position three-way electromagnetic directional valve IV is located at the left position, oil with certain pressure flows in from the left side of the motor gear shifting driving oil cylinder, flows out from the right side of the motor gear shifting driving oil cylinder, acts on the left side end face of the motor gear shifting driving piston, pushes the motor gear shifting driving piston to move rightwards, the lower end of the motor gear shifting driving rocker arm moves rightwards, and the upper end of the motor gear shifting driving rocker arm inclines leftwards by an angle to achieve the. When the two-position three-way electromagnetic directional valve III and the two-position three-way electromagnetic directional valve IV are both in the left position or the right position, the motor gear shifting driving piston is in a balanced state and can be kept in the middle position. When the two-position three-way electromagnetic directional valve III is located at the left position and the two-position three-way electromagnetic directional valve IV is located at the right position, oil with certain pressure flows in from the right side of the motor gear shifting driving oil cylinder, flows out from the left side, acts on the right side end face of the motor gear shifting driving piston, pushes the motor gear shifting driving piston to move leftwards, moves leftwards at the lower end of the motor gear shifting driving rocker arm, and inclines rightwards at an angle at the upper end of the motor gear shifting driving rocker arm to realize shifting into a low-speed gear position. And a position sensor IV is arranged for monitoring the displacement of the motor gear shifting driving piston so as to realize the accurate control of the motor gear shifting position and achieve good motor gear shifting performance.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic control system according to the present invention;
reference numerals:
a power unit 1; an oil tank 11; a first oil filter 12; a motor 13; an oil pump 14; a second oil filter 15; a bypass valve 16; a check valve 17; a pressure sensor 18; an accumulator 19;
a clutch drive unit 2; a three-position three-way electromagnetic directional valve I21; a position sensor I22; a clutch drive cylinder 23; the clutch drive piston 24; a spring I25;
a gear selection drive unit 3; a three-position three-way electromagnetic directional valve II 31; a position sensor II 32; a gear selection driving oil cylinder 33; the gear selection drive piston 34; a spring II 35;
a shift drive unit 4; a two-position three-way electromagnetic directional valve I41; a shift drive cylinder 42; a shift drive piston 43; a shift drive rocker arm 44; a position sensor III 45; a two-position three-way electromagnetic directional valve II 46;
a motor shift drive unit 5; a two-position three-way electromagnetic directional valve III 51; a motor shift drive cylinder 52; a motor shift drive piston 53; a motor shift drive rocker arm 54; a position sensor IV 55; and a two-position three-way electromagnetic directional valve IV 56.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
The following specifically describes a hydraulic control system according to an embodiment of the present invention with reference to the drawings, including: power pack 1, clutch drive unit 2, select to keep off drive unit 3, drive unit 4 and the motor drive unit 5 of shifting, power pack 1 does through advancing oil pipe clutch drive unit 2, select to keep off drive unit 3, drive unit 4 and the motor drive unit 5 of shifting provide working fluid, just clutch drive unit 2, select to keep off drive unit 3, drive unit 4 and the motor drive unit 5 of shifting flow back fluid through returning oil pipe power pack 1.
Wherein, the power unit 1 comprises an oil tank 11, a first oil filter 12, an oil pump 14, a second oil filter 15, a one-way valve 17 and an accumulator 19 which are connected in sequence through oil pipes. The clutch driving unit 2, the gear selecting driving unit 3, the gear shifting driving unit 4 and the motor gear shifting driving unit 5 return oil to the oil tank 11 through an oil return pipe, the oil pump 14 is driven by a motor 13 to provide oil with certain pressure and flow for a hydraulic control system, the first oil filter 12 and the second oil filter 15 are respectively communicated with an oil suction port and an oil discharge port of the oil pump 14, a bypass valve 16 is arranged at the position of the second oil filter 15 in parallel, so that the oil can be supplied to the hydraulic control system through the bypass valve 16 when the second oil filter 15 is blocked, a pressure sensor 18 is arranged on a pipeline at the oil discharge port of the one-way valve 17 and used for monitoring the pressure of the hydraulic control system so as to control the start and stop of the motor 13, the one-way valve 17 is arranged to prevent backflow, and an energy accumulator 19 is arranged to alleviate the pressure impact of the hydraulic control system, and relatively stable pressure is realized.
The clutch driving unit 2 comprises a three-position three-way electromagnetic directional valve I21 and a clutch driving oil cylinder 23 communicated with the three-position three-way electromagnetic directional valve I21, a clutch driving piston 24 is arranged in the clutch driving oil cylinder 23 in a sliding mode, a spring I25 is arranged on the clutch driving piston 24 and provides resetting elasticity for the clutch driving piston 24, an oil suction port of the three-position three-way electromagnetic directional valve I21 is communicated with an oil discharge port of the one-way valve 17, and an oil return port of the three-position three-way electromagnetic directional valve I21 is communicated with the oil tank 11 through an oil return pipe.
Wherein a position sensor i 22 is provided on the clutch actuation piston 24 to monitor the displacement of the clutch actuation piston 24. Therefore, when the three-position three-way electromagnetic directional valve I21 is in the right position, oil with certain pressure flows in from the lower part of the clutch driving oil cylinder 23, acts on the lower surface of the clutch driving piston 24, overcomes the spring force of the spring I25, pushes the clutch driving piston 24 to move upwards, and when the clutch driving piston 24 moves upwards to a sufficient stroke, the clutch is completely separated. When the three-position three-way electromagnetic directional valve I21 is in the neutral position, the clutch driving piston 24 is in a balanced state, and the clutch is kept in a completely separated state. When the three-position three-way electromagnetic directional valve I21 is in the left position, the clutch driving piston 24 moves downwards under the action of the clutch diaphragm spring and the spring I25, oil is pushed back into the oil tank 11, and the clutch is in a combined state. A position sensor i 22 is provided for monitoring the displacement of the clutch actuator piston 24 to achieve precise control of clutch engagement/disengagement for good clutch performance.
The gear selecting driving unit 3 comprises a three-position three-way electromagnetic directional valve II 31 and a gear selecting driving oil cylinder 33 communicated with the three-position three-way electromagnetic directional valve II 31, a gear selecting driving piston 34 is arranged in the gear selecting driving oil cylinder 33 in a sliding mode, a spring II 35 is arranged on the gear selecting driving piston 34 and provides resetting elasticity for the gear selecting driving piston 34, an oil suction port of the three-position three-way electromagnetic directional valve II 31 is communicated with an oil discharge port of the one-way valve 17, and an oil return port of the three-position three-way electromagnetic directional valve II 31 is communicated with the oil tank 11 through an oil return pipe.
Wherein, a position sensor II 32 is arranged on the gear selection driving piston 34 to monitor the displacement of the gear selection driving piston 34. Therefore, when the three-position three-way electromagnetic directional valve II 31 is in the right position, oil with certain pressure flows in from the upper part of the gear selection driving oil cylinder 33, acts on the upper surface of the gear selection driving piston 34, overcomes the spring force of the spring II 35, pushes the gear selection driving piston 34 to move downwards, and realizes gear selection of gear shifting. When the three-position three-way electromagnetic directional valve II 31 is in the neutral position, the gear selection driving piston 34 is in a balanced state and will be kept in a certain gear. When the three-position three-way electromagnetic directional valve II 31 is in the left position, the gear selection driving piston 34 moves upwards under the action of the spring II 35, oil is pushed back into the oil tank 11, and gear selection of downshift is achieved. And a position sensor II 32 is arranged for monitoring the displacement of the gear selection driving piston 34, so that the accurate control of the gear selection position is realized, and good gear selection performance is achieved.
Wherein the gear shifting driving unit 4 comprises a two-position three-way electromagnetic directional valve I41, a two-position three-way electromagnetic directional valve II 46 and two gear shifting driving oil cylinders 42 arranged side by side, two ends of a gear shifting driving piston 43 are respectively arranged in the two gear shifting driving oil cylinders 42 in a sliding manner, the middle part of the gear shifting driving piston 43 is provided with a gear shifting driving rocker arm 44, the oil outlet of the two-position three-way electromagnetic directional valve I41 is communicated with a gear shifting driving oil cylinder 42 through an oil pipe, the oil outlet of the two-position three-way electromagnetic directional valve II 46 is communicated with the other gear shifting driving oil cylinder 42 through an oil pipe, the oil suction ports of the two-position three-way electromagnetic directional valve I41 and the two-position three-way electromagnetic directional valve II 46 are communicated with the oil discharge port of the one-way valve 17, and oil return ports of the two-position three-way electromagnetic reversing valve I41 and the two-position three-way electromagnetic reversing valve II 46 are communicated with the oil tank 11 through oil return pipes.
Wherein, a position sensor III 45 is arranged in the middle of the gear shifting driving piston 43. Thus, when the two-position three-way electromagnetic directional valve II 46 is in the right position and the two-position three-way electromagnetic directional valve I41 is in the left position, oil with certain pressure flows in from the right side of the gear shifting driving oil cylinder 42, flows out from the left side, acts on the right side end face of the gear shifting driving piston 43, pushes the gear shifting driving piston 43 to move leftwards, the lower end of the gear shifting driving rocker arm 44 moves leftwards, the upper end of the gear shifting driving rocker arm 44 inclines rightwards by an angle, and the odd-numbered gears are replaced. When the two-position three-way electromagnetic directional valve I41 and the two-position three-way electromagnetic directional valve II 46 are both in the left position or the right position, the shifting driving piston 43 is in a balanced state and will be kept in the middle position. When the two-position three-way electromagnetic directional valve II 46 is in the left position and the two-position three-way electromagnetic directional valve I41 is in the right position, oil with certain pressure flows in from the left side of the gear shifting driving oil cylinder 42, flows out from the right side, acts on the left side end face of the gear shifting driving piston 43, pushes the gear shifting driving piston 43 to move rightwards, moves the lower end of the gear shifting driving rocker arm 44 rightwards, and inclines the upper end of the gear shifting driving rocker arm 44 leftwards by an angle to realize shifting into even gears. A position sensor iii 45 is provided for monitoring the displacement of the shift drive piston 43 in order to achieve precise control of the shift position and achieve good shifting performance.
Wherein the motor gear-shifting driving unit 5 comprises a two-position three-way electromagnetic directional valve III 51, a two-position three-way electromagnetic directional valve IV 56 and two motor gear-shifting driving oil cylinders 52 arranged side by side, two ends of a motor gear-shifting driving piston 53 are respectively arranged in the two motor gear-shifting driving oil cylinders 52 in a sliding manner, the middle part of the motor gear shifting driving piston 53 is provided with a motor gear shifting driving rocker arm 54, the oil outlet of the two-position three-way electromagnetic directional valve III 51 is communicated with a motor gear shifting driving oil cylinder 52 through an oil pipe, an oil discharge port of the two-position three-way electromagnetic directional valve IV 56 is communicated with the other motor gear-shifting driving oil cylinder 52 through an oil pipe, the oil suction ports of the two-position three-way electromagnetic directional valve III 51 and the two-position three-way electromagnetic directional valve IV 56 are communicated with the oil discharge port of the one-way valve 17, and oil return ports of the two-position three-way electromagnetic reversing valve III 51 and the two-position three-way electromagnetic reversing valve IV 56 are communicated with the oil tank 11 through oil return pipes.
And a position sensor IV 55 is arranged in the middle of the motor gear-shifting driving piston 53. Thus, when the two-position three-way electromagnetic directional valve III 51 is in the right position and the two-position three-way electromagnetic directional valve IV 56 is in the left position, oil with certain pressure flows in from the left side of the motor gear shifting driving oil cylinder 52, flows out from the right side, acts on the left side end face of the motor gear shifting driving piston 53, pushes the motor gear shifting driving piston 53 to move rightwards, the lower end of the motor gear shifting driving rocker arm 54 moves rightwards, and the upper end of the motor gear shifting driving rocker arm 54 inclines leftwards by an angle, so that the high-speed gear of the motor is changed. When the two-position three-way electromagnetic directional valve III 51 and the two-position three-way electromagnetic directional valve IV 56 are both in the left position or the right position, the motor gear shifting driving piston 53 is in a balanced state and will be kept in the middle position. When the two-position three-way electromagnetic directional valve III 51 is located at the left position and the two-position three-way electromagnetic directional valve IV 56 is located at the right position, oil with certain pressure flows in from the right side of the motor gear shifting driving oil cylinder 52, flows out from the left side, acts on the right side end face of the motor gear shifting driving piston 53, pushes the motor gear shifting driving piston 53 to move leftwards, the lower end of the motor gear shifting driving rocker arm 54 moves leftwards, and the upper end of the motor gear shifting driving rocker arm 54 inclines rightwards by an angle, so that the low-speed gear position is shifted. The position sensor IV 55 is arranged for monitoring the displacement of the motor gear shifting driving piston 53, so that the accurate control of the motor gear shifting position is realized, and good motor gear shifting performance is achieved.
The utility model can realize the functions of combination/separation of the main clutch, gear selection, gear shifting, switching of high and low gears of the motor and the like in the hybrid electric vehicle transmission; an energy accumulator is arranged in the hydraulic control system to alleviate pressure impact and realize stable pressure. The hydraulic control system is provided with a pressure sensor and a plurality of position sensors, and is used for monitoring the pressure of the hydraulic control system and the position of the oil cylinder so as to realize accurate control and achieve good performance; additionally, the utility model discloses simple structure, its spare part is rational in infrastructure, easily processing and assembly. The interface type can be carried on different types of hybrid electric vehicles and transmissions thereof by adopting a specific interface form, and has lower cost and considerable economic benefit.
According to the embodiment of the present invention, the vehicle comprises the hydraulic control system according to the above embodiment, and because the hydraulic control system according to the above embodiment of the present invention has the above technical effects, the vehicle according to the embodiment of the present invention also has the corresponding technical effects, that is, by using the hydraulic control system, the functions of combining/separating the main clutch in the hybrid vehicle transmission, selecting and shifting gears, and switching the high and low gears of the motor are realized; an energy accumulator is arranged in the hydraulic control system to alleviate pressure impact and realize stable pressure. The device is provided with a pressure sensor and a plurality of position sensors, and is used for monitoring the pressure of a hydraulic control system and the position of a piston so as to realize accurate control and achieve good performance; the utility model relates to a hydraulic control system simple structure, its spare part is rational in infrastructure, easily processing and assembly. By adopting a specific interface form, different types of hybrid vehicles and transmissions thereof can be carried, and the hybrid vehicle transmission has lower cost and considerable economic benefit.
Other structures and operations of the vehicle according to the embodiments of the present invention will be understood and readily implemented by those skilled in the art, and thus will not be described in detail.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A hydraulic control system, comprising: the automatic transmission system comprises a power unit (1), a clutch driving unit (2), a gear selecting driving unit (3), a gear shifting driving unit (4) and a motor gear shifting driving unit (5), wherein the power unit (1) provides working oil for the clutch driving unit (2), the gear selecting driving unit (3), the gear shifting driving unit (4) and the motor gear shifting driving unit (5) through oil inlet pipes, and the clutch driving unit (2), the gear selecting driving unit (3), the gear shifting driving unit (4) and the motor gear shifting driving unit (5) return the oil to the power unit (1) through oil return pipes;
the power unit (1) comprises an oil tank (11), a first oil filter (12), an oil pump (14), a second oil filter (15), a one-way valve (17) and an energy accumulator (19) which are sequentially connected through oil pipes, the clutch driving unit (2), the gear selecting driving unit (3), the gear shifting driving unit (4) and the motor gear shifting driving unit (5) return oil to the oil tank (11) through oil return pipes, the oil pump (14) is driven by a motor (13), the first oil filter (12) and the second oil filter (15) are respectively communicated with an oil suction port and an oil discharge port of the oil pump (14), a bypass valve (16) is arranged at the position of the second oil filter (15) in parallel, and a pressure sensor (18) is arranged on a pipeline at the position of the oil discharge port of the one-way valve (17).
2. The hydraulic control system according to claim 1, wherein the clutch driving unit (2) comprises a three-position three-way electromagnetic directional valve I (21) and a clutch driving oil cylinder (23) communicated with the three-position three-way electromagnetic directional valve I, a clutch driving piston (24) is arranged in the clutch driving oil cylinder (23) in a sliding mode, a spring I (25) is arranged on the clutch driving piston (24) to provide reset elastic force for the clutch driving piston (24), an oil suction port of the three-position three-way electromagnetic directional valve I (21) is communicated with an oil discharge port of the one-way valve (17), and an oil return port of the three-position three-way electromagnetic directional valve I (21) is communicated with the oil tank (11) through an oil return pipe.
3. The hydraulic control system according to claim 1, wherein the gear selection driving unit (3) comprises a three-position three-way electromagnetic directional valve II (31) and a gear selection driving oil cylinder (33) communicated with the three-position three-way electromagnetic directional valve II, a gear selection driving piston (34) is slidably arranged in the gear selection driving oil cylinder (33), a spring II (35) is arranged on the gear selection driving piston (34) to provide resetting elastic force for the gear selection driving piston (34), an oil suction port of the three-position three-way electromagnetic directional valve II (31) is communicated with an oil discharge port of the one-way valve (17), and an oil return port of the three-position three-way electromagnetic directional valve II (31) is communicated with the oil tank (11) through an oil return pipe.
4. The hydraulic control system according to claim 1, wherein the shift driving unit (4) comprises a two-position three-way electromagnetic directional valve I (41), a two-position three-way electromagnetic directional valve II (46) and two shift driving cylinders (42) arranged side by side, two ends of a shift driving piston (43) are respectively arranged in the two shift driving cylinders (42) in a sliding manner, a shift driving rocker arm (44) is arranged in the middle of the shift driving piston (43), an oil outlet of the two-position three-way electromagnetic directional valve I (41) is communicated with one shift driving cylinder (42) through an oil pipe, an oil outlet of the two-position three-way electromagnetic directional valve II (46) is communicated with the other shift driving cylinder (42) through an oil pipe, oil inlets of the two-position three-way electromagnetic directional valve I (41) and the two-position three-way electromagnetic directional valve II (46) are communicated with an oil outlet of the one-way valve (17), and oil return ports of the two-position three-way electromagnetic reversing valve I (41) and the two-position three-way electromagnetic reversing valve II (46) are communicated with the oil tank (11) through oil return pipes.
5. The hydraulic control system according to claim 1, wherein the motor shift driving unit (5) comprises a two-position three-way electromagnetic directional valve III (51), a two-position three-way electromagnetic directional valve IV (56) and two motor shift driving cylinders (52) arranged side by side, two ends of a motor shift driving piston (53) are respectively arranged in the two motor shift driving cylinders (52) in a sliding manner, a motor shift driving rocker arm (54) is arranged in the middle of the motor shift driving piston (53), an oil discharge port of the two-position three-way electromagnetic directional valve III (51) is communicated with one motor shift driving cylinder (52) through an oil pipe, an oil discharge port of the two-position three-way electromagnetic directional valve IV (56) is communicated with the other motor shift driving cylinder (52) through an oil pipe, oil suction ports of the two-position three-way electromagnetic directional valve III (51) and the two-position three-way electromagnetic directional valve IV (56) are communicated with an oil discharge port of the one-way valve (17, and oil return ports of the two-position three-way electromagnetic reversing valve III (51) and the two-position three-way electromagnetic reversing valve IV (56) are communicated with the oil tank (11) through oil return pipes.
6. The hydraulic control system of claim 2, wherein a position sensor i (22) is provided on the clutch actuation piston (24) to monitor displacement of the clutch actuation piston (24).
7. A hydraulic control system according to claim 3, characterized in that a position sensor ii (32) is provided on the gear selection drive piston (34) to monitor the displacement of the gear selection drive piston (34).
8. Hydraulic control system according to claim 4, characterized in that a position sensor III (45) is arranged in the middle of the shift drive piston (43) to monitor the displacement of the shift drive piston (43).
9. The hydraulic control system of claim 5, wherein a position sensor IV (55) is provided in the middle of the electric motor shift drive piston (53) to monitor the displacement of the electric motor shift drive piston (53).
10. A hybrid vehicle, characterized by comprising the hydraulic control system according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020396520.XU CN211778275U (en) | 2020-03-25 | 2020-03-25 | Hydraulic control system and hybrid electric vehicle with same |
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| CN202020396520.XU CN211778275U (en) | 2020-03-25 | 2020-03-25 | Hydraulic control system and hybrid electric vehicle with same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648363A (en) * | 2020-12-14 | 2021-04-13 | 合升智能技术(无锡)有限公司 | Electric control automatic gear shifting hydraulic system of commercial vehicle gearbox |
| CN113915325A (en) * | 2021-09-28 | 2022-01-11 | 常州华创航空科技有限公司 | Full-power gear shifting gearbox hydraulic and lubricating system and gearbox |
-
2020
- 2020-03-25 CN CN202020396520.XU patent/CN211778275U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648363A (en) * | 2020-12-14 | 2021-04-13 | 合升智能技术(无锡)有限公司 | Electric control automatic gear shifting hydraulic system of commercial vehicle gearbox |
| CN113915325A (en) * | 2021-09-28 | 2022-01-11 | 常州华创航空科技有限公司 | Full-power gear shifting gearbox hydraulic and lubricating system and gearbox |
| CN113915325B (en) * | 2021-09-28 | 2023-09-12 | 江苏常发农业装备股份有限公司 | Full power gear shifting gearbox hydraulic pressure and lubrication system and gearbox |
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