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Control method of engine unit in vehicle and vehicle

An engine and vehicle technology, applied in the field of vehicles, can solve the problems of complex power transmission system structure, complex control strategy, and low transmission efficiency, and achieve the effects of improving user experience, better fuel economy, and reducing energy consumption

Active Publication Date: 2015-01-14
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the related technologies known to the inventor, the power transmission system in a hybrid vehicle is generally complex in structure, bulky, and low in transmission efficiency. The strategy is complicated and needs to be improved

Method used

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  • Control method of engine unit in vehicle and vehicle
  • Control method of engine unit in vehicle and vehicle
  • Control method of engine unit in vehicle and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0156] Such as figure 2 As shown, the engine unit 1 is connected to the input end 313 of the double clutch 31, the first output end 311 of the double clutch 31 is connected to the first input shaft 21, and the second output end 312 of the double clutch 31 is connected to the second input shaft 22, The second input shaft 22 is coaxially sleeved on the first input shaft 21 .

[0157] A driving gear 25 is fixedly arranged on the first input shaft 21 and the second input shaft 22 respectively, and the first motor generator 41 is indirectly driven with the driving gear 25 on the second input shaft 22 through an intermediate gear 411 . Two driven gears 26 are fixedly arranged on the output shaft 24 , and the two driven gears 26 respectively mesh with the driving gears 25 on the first input shaft 21 and the second input shaft 22 to form two transmission gears.

[0158] The synchronizer 6 is arranged on the output shaft 24, and the driving gear of the main reducer (that is, the outp...

Embodiment 2

[0186] Such as image 3 As shown, the power transmission system 100 in this embodiment and figure 2 The difference of the power transmission system 100 in the above may only lie in the arrangement form of the second motor generator 43 . In this embodiment, each second motor-generator 43 drives the corresponding rear wheel 220 through a second speed change mechanism 72, and the remaining parts can be connected with figure 2 The power transmission system 100 in the embodiment is basically the same, and will not be repeated here. As for the specific working conditions, it is related to figure 2 The power transmission system 100 in the embodiment is basically the same, and the only difference is that the power transmission between the second motor generator 43 and the corresponding rear wheel 220 needs to go through the second transmission mechanism 72 , which will not be described in detail here.

Embodiment 3

[0188] Such as Figure 4 As shown, the power transmission system 100 in this embodiment and figure 2 The difference of the power transmission system 100 in the above may only lie in the arrangement form of the second motor generator 43 . In this embodiment, the second motor-generator 43 is one and drives the corresponding rear wheel 220 through a first speed change mechanism 71, and the remaining parts can be connected with figure 2 The power transmission system 100 in the embodiment is basically the same, and will not be repeated here. As for the specific working conditions, it is related to figure 2 The power transmission system 100 in the embodiment is basically the same, and the only difference is that the two rear wheels 220 are driven by a second motor-generator 43 and a first speed change mechanism 71, so without adding new components, only The differential function of the two rear wheels 220 cannot be realized by a motor and a transmission mechanism, but it can b...

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PUM

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Abstract

The invention provides a control method of an engine unit in a vehicle. The vehicle comprises the engine unit, a speed changer unit, a first electric generator, an output part, a power switching device, a second electric generator and a power battery, wherein the speed changer unit is selectively connected with the engine unit in a power coupling manner, the first electric generator is connected with the speed changer unit in a power coupling manner, the second electric generator is used for driving front wheels and / or rear wheels, and the power battery is respectively connected with the first electric generator and the second electric generator. The method comprises the following steps: acquiring a working mode and working parameters of the vehicle; controlling the engine unit to be started or powered off according to the working parameters and the working mode. According to the method, the engine unit is controlled to be started or powered off according to the working parameters and the working mode, so that the consumption of energy is reduced, the application frequency of a starting motor is reduced, the service life of the starting motor is prolonged, and the user experience is improved. The invention also provides a vehicle.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a method for controlling an engine unit in a vehicle and the vehicle. Background technique [0002] With the continuous consumption of energy, the development and utilization of new energy vehicles has gradually become a trend. As one of the new energy vehicles, a hybrid vehicle is driven by an engine and / or an electric motor, and has multiple modes, which can improve transmission efficiency and fuel economy. [0003] However, in the related technologies known to the inventor, the power transmission system in a hybrid electric vehicle is generally complex in structure, bulky, and low in transmission efficiency. The strategy is complex and needs to be improved. Contents of the invention [0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an object of the present invention is to propose a met...

Claims

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Application Information

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IPC IPC(8): B60W10/06B60W10/10B60W20/00B60W40/00B60W30/182B60K6/26B60K6/52B60K6/54B60K6/28F02D29/02F02D29/06B60W20/40
CPCB60K6/26B60K6/28B60K6/52B60K6/54B60W10/06B60W10/08B60W10/10B60W20/00B60W30/182F02D29/02F02D29/06B60W2710/1005B60W2710/0666B60W2710/083B60W2520/10B60W2540/10B60W2510/244B60W2552/15B60K1/02B60K6/445B60W20/11B60K6/387B60K6/442B60W50/082B60W10/02B60W10/26B60W2510/1005Y02T10/84B60W20/10Y10S903/916Y10S903/93B60W2552/20Y02T10/62B60W2540/215B60W2710/06B60W2710/08B60W2710/10B60Y2200/92B60Y2300/192B60Y2300/43B60Y2300/60B60Y2300/70
Inventor 杨冬生廉玉波张金涛罗红斌
Owner BYD CO LTD
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