A vehicle power system with double retarder and vehicle

Abstract

The utility model provides a kind of vehicle power system and vehicle with double retarder, wherein, a kind of vehicle power system with double retarder includes gearbox and engine for providing power, further include primary retarder, transmission shaft, secondary retarder and drive axle mounted on suspension, the engine, the gearbox, the primary retarder, the transmission shaft, the secondary retarder and the drive axle are sequentially connected to transmit power.This application carries primary retarder at gearbox output end, increases secondary retarder at drive axle input end, and the required braking force is output by two-stage retarder, and double-stage retarder acts on vehicle simultaneously, which ensures that large-tonnage vehicle has auxiliary braking force output during descending long slope, and improves the safety of whole vehicle descending long slope.

Description

Technical Field

[0001] This utility model relates to the field of vehicle power system technology, and more specifically, to a vehicle power system with dual retarders and a vehicle. Background Technology

[0002] In large buses exceeding 13 meters in length, space constraints prevent further increases in retarder size. This can lead to retarder burnout during long downhill descents, causing the vehicle to lose auxiliary braking force and rely entirely on mechanical braking, significantly reducing safety. Some large buses are equipped with retarder temperature monitoring devices. During downhill descents, if the temperature exceeds a set limit, the device reduces braking force to protect the retarder wiring harness from burnout, further compromising safety.

[0003] In view of this, the applicant hereby submits this application after studying the existing technology. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a vehicle power system with dual retarders, including a gearbox and an engine for providing power, and also including a primary retarder, a drive shaft, a secondary retarder, and a drive axle mounted on the suspension. The engine, the gearbox, the primary retarder, the drive shaft, the secondary retarder, and the drive axle are connected in sequence to transmit power.

[0005] As a further optimization, the first-stage retarder is an eddy current retarder.

[0006] As a further optimization, the secondary retarder is an eddy current retarder.

[0007] As a further optimization, the first-stage retarder and the second-stage retarder are each equipped with a temperature sensing device.

[0008] This application also provides a vehicle, including any of the above-described vehicle powertrain systems with dual retarders.

[0009] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0010] The present application discloses a vehicle power system with dual retarders. A primary retarder is installed at the output end of the gearbox, and a secondary retarder is added at the input end of the drive axle. The required braking force is output through the two-stage retarders. The dual-stage retarders act on the vehicle simultaneously, ensuring that heavy vehicles have continuous auxiliary braking force output during long downhill descents, thereby improving the safety of the entire vehicle when descending long slopes. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of a vehicle power system with dual retarders according to this utility model;

[0013] Figure 2 This is a schematic diagram of the installation structure of a vehicle power system with dual retarders according to this utility model;

[0014] The markings in the diagram are: 1-Suspension; 2-Drive axle; 3-Secondary retarder; 4-Drive shaft; 5-Primary retarder; 6-Transmission; 7-Engine. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Example

[0017] Depend on Figure 1 , Figure 2 As shown, this embodiment of the invention provides a vehicle powertrain system with dual retarders, including an engine 7, a transmission 6, a primary retarder 5, a driveshaft 4, a secondary retarder 3, and a drive axle 2. The engine 7, transmission 6, primary retarder 5, driveshaft 4, secondary retarder 3, and drive axle 2 are connected sequentially to transmit power. The engine 7 provides the power source for the vehicle, and the power transmission sequence is as follows: engine 7—transmission 6—transmission-end retarder 5—driveshaft 4—axle-end retarder 3—drive axle 2. The drive axle 2 is mounted on the vehicle's suspension 1, thus ultimately transmitting power to the wheels.

[0018] This application discloses a vehicle power system with dual retarders, particularly suitable for large-tonnage buses. In existing technology, large-tonnage buses only have a retarder at the gearbox end. This application adds a secondary retarder to the input end of the drive axle, building upon the existing gearbox retarder. During long downhill descents, braking force is output through both retarder stages. Compared to vehicles with a single-stage retarder, this reduces the retarder's output, preventing burnout. Simultaneously, the primary and secondary retarders work together to ensure continuous auxiliary braking force output for large-tonnage vehicles during long downhill descents, improving overall vehicle safety.

[0019] It is understandable that the engine 7, gearbox 6, first-stage retarder 5, drive shaft 4, second-stage retarder 3 and drive axle 2 can all use existing devices. The first-stage retarder 5 is connected to the gearbox 6 through a flange, the second-stage retarder 3 is connected to the drive axle 2 through a flange, and the first-stage retarder 5 and the second-stage retarder 3 are respectively connected to the flanges at both ends of the drive shaft 4.

[0020] Among them, the first-stage retarder 5 and the second-stage retarder 3 preferentially use eddy current retarders, which have a faster response than hydraulic retarders.

[0021] Furthermore, both the primary retarder 5 and the secondary retarder 3 are equipped with temperature sensing devices (not shown in the figure). The temperature sensing devices are used to monitor the temperature of the retarder in real time to prevent it from burning out due to excessive temperature.

[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vehicle powertrain system with dual retarders, comprising a gearbox and an engine for providing power, characterized in that, It also includes a primary retarder, a drive shaft, a secondary retarder, and a drive axle mounted on the suspension. The engine, the gearbox, the primary retarder, the drive shaft, the secondary retarder, and the drive axle are connected in sequence to transmit power.

2. A vehicle powertrain system with dual retarders according to claim 1, characterized in that... The first-stage retarder is an eddy current retarder.

3. A vehicle powertrain system with dual retarders according to claim 1, characterized in that... The secondary retarder is an eddy current retarder.

4. A vehicle powertrain system with dual retarders according to claim 1, characterized in that... The first-stage retarder and the second-stage retarder are each equipped with a temperature sensing device.

5. A vehicle, characterized in that... This includes a vehicle powertrain with dual retarders as described in any one of claims 1-4.

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