CN213649317U - Heavy commercial vehicle hybrid power system based on transmission system comprehensive transmission efficiency improvement - Google Patents
Heavy commercial vehicle hybrid power system based on transmission system comprehensive transmission efficiency improvement Download PDFInfo
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- CN213649317U CN213649317U CN202021965761.8U CN202021965761U CN213649317U CN 213649317 U CN213649317 U CN 213649317U CN 202021965761 U CN202021965761 U CN 202021965761U CN 213649317 U CN213649317 U CN 213649317U
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Abstract
The utility model belongs to the technical field of hybrid power systems, in particular to a heavy commercial vehicle hybrid power system based on the comprehensive transmission efficiency improvement of a transmission system; the transmission is composed of an engine, a clutch, a transmission, a rear axle transmission shaft, a rear axle and an electric drive axle; the engine transmits power to the rear axle through the clutch, the transmission and the rear axle transmission shaft, and finally transmits the power to two wheels; the electric drive bridge is also included; the electric drive axle is driven by the engine in a combined way; or the electric drive axle is independently controlled to transmit power to two wheel sides; the utility model utilizes the advantages of the hybrid electric vehicle to improve the fuel economy of the whole vehicle; because the electric drive bridge motor is independently driven, the power cannot be interrupted when the gear of the gearbox is switched, the driving feeling is improved, and the acceleration performance is stronger; the motor can be controlled to brake energy recovery during braking, and the engine is assisted to drive the whole vehicle during driving, so that the working point of the engine and the response of an accelerator are optimized, and the fuel economy is improved.
Description
Technical Field
The utility model belongs to the technical field of hybrid power system, specifically be relate to a heavy commercial car hybrid power system based on transmission is synthesized transmission efficiency and is promoted.
Background
Under the influence of the engine capacity and complex road conditions, the traditional heavy commercial vehicle power transmission system mostly adopts an overdrive gearbox and a medium-speed-ratio duplex drive axle, and the power performance and the economical efficiency of the whole vehicle are considered; in order to meet the requirements of future regulations on the fuel consumption of the finished automobile and the requirements of energy conservation and emission reduction in the market, various hybrid power schemes are proposed for heavy commercial vehicles by domestic and foreign finished automobile factories, wherein the most studied scheme is P2 configuration, and a motor is coupled with an engine to provide power for the finished automobile.
At present, the research of P2 configuration hybrid heavy commercial vehicles is carried out by various large whole vehicle factories at home and abroad, the research is limited by the rotating speed of an engine and a space interface, when a motor is selected, only a large-torque, low-rotating-speed and large-diameter driving motor can be selected to meet the requirement on the power of the motor, and the motor has large weight and high cost; when the driving motor transmits power to the wheels, the transmission chain is long, the number of friction pairs is large, energy loss is large, and similarly, when braking energy is recovered, the recovery efficiency is low; when the gearbox shifts gears, because the clutch breaks off, make whole car power interrupt, influence the driving impression, simultaneously because motor rotor inertia is big, still can arouse to shift gears and strike scheduling problem.
CN 101920652 a discloses a series/parallel connection dual-motor multi-clutch hybrid power drive unit for vehicle;
CN 206012313U discloses a hybrid heavy-duty tractor chassis;
CN 204264267U discloses a novel hybrid power commercial vehicle chassis;
the hybrid power schemes published by CN 101920652A, CN 206012313U, CN 204264267U all belong to P2 configuration, and on the premise of the same power, a P2 configuration motor is limited by rotating speed and a space interface, and only a large-torque, low-rotating-speed and large-diameter motor can be adopted, so that the motor is heavy and has high cost; the power of the engine is coupled with the power of the motor and then is transmitted to wheels through a gearbox and a drive axle, so that the control difficulty is high; the inertia of the motor rotor is large, and the problems of impact and the like are easily caused when the transmission is shifted.
Disclosure of Invention
The utility model aims to solve the technical problem that the above-mentioned problem that prior art exists has been overcome, a heavy commercial car hybrid power system based on transmission system comprehensive transmission efficiency promotes is provided.
The utility model provides a heavy commercial vehicle hybrid power system based on transmission system comprehensive transmission efficiency promotes, adopt P4 configuration, by the engine promptly, the clutch, the derailleur, the transmission shaft, the transaxle, the electricity drive axle constitutes, the engine is relatively independent with the motor, can separately drive alone and jointly drive as required, and simultaneously, owing to increased the power supply, P4 mixes heavy commercial vehicle can suitably reduce the engine discharge capacity, adopt direct gear gearbox and little velocity ratio drive rear axle, this change can make the comprehensive transmission efficiency of gearbox and transaxle improve more than 5%, and simultaneously, the driving chain of driving motor to wheel has been shortened, can improve transmission efficiency more than 3%, thereby the efficiency of energy use and recovery has been improved;
the electric drive bridge is used as an independent electric drive system, the rotating speed of a drive motor does not need to be matched with the rotating speed of an engine, a small-torque high-rotating-speed motor can be selected under the same power, and the weight and the cost of the motor are reduced;
in order to solve the above technical problem, the present invention adopts the following technical solution, which is described below with reference to the accompanying drawings:
a heavy commercial vehicle hybrid power system based on the improvement of the comprehensive transmission efficiency of a transmission system is composed of an engine 3-1, a clutch 3-2, a transmission 3-3, a rear axle transmission shaft 3-4, a rear axle 3-5 and an electric drive axle 3-6;
the engine 3-1 transmits power to the rear axle 3-5 through the clutch 3-2, the transmission 3-3 and the rear axle transmission shaft 3-4, and finally transmits the power to two wheels.
Further, the heavy commercial vehicle hybrid power system based on the comprehensive transmission efficiency improvement of the transmission system further comprises an electric drive axle 3-6;
the electric drive axle 3-6 is driven in conjunction with the engine 3-1.
Further, the heavy commercial vehicle hybrid power system based on the comprehensive transmission efficiency improvement of the transmission system further comprises an electric drive axle 3-6;
the electric drive axles 3-6 can be controlled individually to transmit power to both wheel sides.
Further, the transmission 3-3 employs a direct gear scheme.
Further, the rear axles 3-5 adopt a low speed ratio scheme.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model utilizes the advantages of the hybrid electric vehicle to improve the fuel economy of the whole vehicle on the premise of satisfying various complex working conditions; because the electric drive bridge motor is independently driven, the power cannot be interrupted when the gear of the gearbox is switched, the driving feeling is improved, and the acceleration performance is stronger; the motor can be controlled to recover braking energy during braking, and the engine is assisted to drive the whole vehicle during driving, so that the working point of the engine and the response of an accelerator are optimized, and the fuel economy is improved; compared with a P2 configuration, the P4 configuration has higher energy conversion efficiency, less mechanical loss during driving and more sufficient braking recovery; the P4 is obtained by modifying a mechanical drive axle into an electric drive axle, so that the mass of the whole vehicle is obviously reduced compared with that of the P2, and compared with the traditional vehicle, the weight is increased by a small amount, and meanwhile, the situation that the P2 is difficult to arrange in space is avoided; the adaptability of P4 is stronger, and the influence of the environment on the dynamic property and the economical efficiency of the whole vehicle is reduced through the motor drive in the plateau environment; in terms of added cost, P4 is more easily converted from a conventional vehicle to a parallel hybrid vehicle than P2.
Drawings
The invention will be further described with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a conventional commercial vehicle power system;
FIG. 2 is a schematic illustration of a P2 hybrid powertrain;
fig. 3 is a schematic diagram of a P4 hybrid power system in a hybrid power system of a heavy-duty commercial vehicle based on the improvement of the comprehensive transmission efficiency of a transmission system according to the present invention;
in the figure: 1-1 engine A; 1-2 clutch A; 1-3 transmission A; 1-4 a middle bridge transmission shaft A; 1-5 through bridge A; 1-6 rear axle transmission shafts A; 1-7 rear axle A;
2-1, engine B; 2-2 clutch B; 2-3 driving the motor; 2-4 transmission B; 2-5 a middle axle transmission shaft B; 2-6 through bridge B; 2-7 rear axle transmission shaft B; 2-8 rear axle B;
3-1 engine; 3-2 clutch; 3-3 transmissions; 3-4 rear axle transmission shafts; 3-5 rear axle; 3-6 electric drive axle.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
referring to fig. 1, a schematic diagram of a conventional commercial vehicle power system is shown;
the engine A1-1 transmits power to a through axle A1-5 through a clutch A1-2, a transmission A1-3 and a middle axle transmission shaft A1-4, the through axle A1-5 evenly distributes the power to wheel edges and a rear axle transmission shaft A1-6 through an inter-axle differential, and transmits the power to the rear axle A1-7 through the rear axle transmission shaft A1-6 and finally to the wheel edges of the rear axle A1-7.
Referring to FIG. 2, a schematic diagram of a P2 hybrid system is shown;
2-1, engine B; 2-2 clutch B; 2-3 driving the motor; 2-4 transmission B; 2-5 a middle axle transmission shaft B; 2-6 through bridge B; 2-7 rear axle transmission shaft B; 2-8 rear axle B;
the engine B2-1 drives the motor 2-3 through the clutch B2-2 alone or in combination to transmit power to the through axle B2-6 through the transmission 2-4B and the middle axle transmission shaft B2-5, the through axle B2-6 distributes the power to the wheel side and the rear axle transmission shaft B2-7 evenly through an inter-axle differential, and transmits the power to the rear axle B2-8 through the rear axle transmission shaft B2-7 and finally to the wheel side of the rear axle B2-8.
The utility model provides a heavy commercial vehicle hybrid power system based on transmission system comprehensive transmission efficiency promotes, adopt P4 configuration, by the engine promptly, the clutch, the derailleur, the transmission shaft, the transaxle, the electricity drive axle constitutes, the engine is relatively independent with the motor, can separately drive alone and jointly drive as required, and simultaneously, owing to increased the power supply, P4 mixes heavy commercial vehicle can suitably reduce the engine discharge capacity, adopt direct gear gearbox and little velocity ratio drive rear axle, this change can make the comprehensive transmission efficiency of gearbox and transaxle improve more than 5%, and simultaneously, the driving chain of driving motor to wheel has been shortened, can improve transmission efficiency more than 3%, thereby the efficiency of energy use and recovery has been improved;
a heavy commercial vehicle hybrid power system based on transmission system comprehensive transmission efficiency improvement is composed of an engine 3-1, a clutch 3-2, a transmission 3-3, a rear axle transmission shaft 3-4, a rear axle 3-5 and an electric drive axle 3-6, wherein the transmission 3-3 adopts a direct gear scheme, the rear axle 3-5 adopts a small speed ratio scheme, and the transmission system comprehensive transmission efficiency can be obviously improved compared with a P2 configuration, so that the fuel economy of the whole vehicle is effectively improved, and meanwhile, the transmission case is free of power interruption during gear shifting, and the power performance and the smoothness of the whole vehicle are kept.
The power system consists of an engine 3-1, a clutch 3-2, a transmission 3-3, a rear axle transmission shaft 3-4, a rear axle 3-5 and an electric drive axle 3-6.
The engine 3-1 transmits power to the rear axle 3-5 through the clutch 3-2, the transmission 3-3 and the rear axle transmission shaft 3-4, and finally transmits the power to two wheels; the electric drive axles 3-6 can be controlled independently according to the requirements of the whole vehicle, and the power is transmitted to two wheels.
When the road conditions are poor, such as vehicle start or climbing, the electric drive axle 3-6 and the engine 3-1 are driven jointly, the working point and the accelerator response of the engine are optimized, and the fuel economy of the engine is improved;
when the road condition is good, such as high-speed cruising of a vehicle and the like, the fuel economy of the engine is best at the moment, the electric drive axle does not participate in driving, and the electric drive axle can be disconnected or can enter an energy recovery state to charge the battery according to the distribution of the working points of the engine;
when the road condition is good, and the vehicle overtakes, the electric drive axle can respond quickly, so that enough power is provided for the vehicle, the overtaking action is completed quickly, and the driving safety is improved;
when the vehicle brakes, the electric drive axle enters an energy recovery state to charge the battery;
when the vehicle runs in idle load or light load short distance, the engine does not participate in driving, and the electric drive axle can independently drive the whole vehicle to run.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention. And those not described in detail in this specification are well within the skill of those in the art.
Claims (5)
1. The utility model provides a heavy commercial car hybrid power system based on transmission system comprehensive transmission efficiency promotes which characterized in that:
the transmission consists of an engine (3-1), a clutch (3-2), a transmission (3-3), a rear axle transmission shaft (3-4), a rear axle (3-5) and an electric drive axle (3-6);
the engine (3-1) transmits power to the rear axle (3-5) through the clutch (3-2), the transmission (3-3) and the rear axle transmission shaft (3-4) and finally transmits the power to two wheels.
2. The hybrid power system for a heavy-duty commercial vehicle based on the improvement of the comprehensive transmission efficiency of the transmission system according to claim 1, characterized in that:
also comprises an electric drive axle (3-6);
the electric drive axle (3-6) is driven in conjunction with the engine (3-1).
3. The hybrid power system for a heavy-duty commercial vehicle based on the improvement of the comprehensive transmission efficiency of the transmission system according to claim 1, characterized in that:
also comprises an electric drive axle (3-6);
the electric drive axles (3-6) can be controlled individually to transmit power to two wheel sides.
4. A heavy commercial vehicle hybrid powertrain system based on driveline integrated transmission efficiency enhancement as claimed in any one of claims 1 to 3 wherein:
the transmission (3-3) adopts a direct gear scheme.
5. The hybrid power system for a heavy-duty commercial vehicle based on the improvement of the comprehensive transmission efficiency of the transmission system according to claim 4, characterized in that:
the rear axle (3-5) adopts a small speed ratio scheme.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021965761.8U CN213649317U (en) | 2020-09-10 | 2020-09-10 | Heavy commercial vehicle hybrid power system based on transmission system comprehensive transmission efficiency improvement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021965761.8U CN213649317U (en) | 2020-09-10 | 2020-09-10 | Heavy commercial vehicle hybrid power system based on transmission system comprehensive transmission efficiency improvement |
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| CN213649317U true CN213649317U (en) | 2021-07-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419683A (en) * | 2022-09-22 | 2022-12-02 | 一汽解放汽车有限公司 | Speed reducer and vehicle |
| CN115431745A (en) * | 2022-10-08 | 2022-12-06 | 一汽解放汽车有限公司 | Hybrid middle axle speed reducer and vehicle |
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2020
- 2020-09-10 CN CN202021965761.8U patent/CN213649317U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419683A (en) * | 2022-09-22 | 2022-12-02 | 一汽解放汽车有限公司 | Speed reducer and vehicle |
| CN115431745A (en) * | 2022-10-08 | 2022-12-06 | 一汽解放汽车有限公司 | Hybrid middle axle speed reducer and vehicle |
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