A vehicle load learning system and method based on extended power interruption time

A technology of power interruption and learning system, which is applied in the field of vehicle load learning system, which can solve the problems that the slope and load cannot complete self-learning, prolong the power interruption time, etc., and achieve the effect of avoiding the problem of cyclic shifting

Active Publication Date: 2022-07-05
ZF COMMERCIAL VEHICLE SYSTEMS (QINGDAO) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the AMT gearbox of heavy-duty trucks cannot complete the self-study on slopes and loads for a long time due to the fast shift time, the present invention proposes a vehicle load learning system and method based on prolonging the power interruption time. During the gearing process, delay the closing time of the clutch after entering the gear to lengthen the power interruption time, so that the ramp can be accurately learned when shifting gears. Based on this, the vehicle load can also be quickly calculated after the clutch is closed.

Method used

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  • A vehicle load learning system and method based on extended power interruption time
  • A vehicle load learning system and method based on extended power interruption time
  • A vehicle load learning system and method based on extended power interruption time

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Embodiment 1

[0049]In order to verify the feasibility of the present invention, a comparison test is carried out on a 45-ton fully loaded vehicle and an 8-ton empty locomotive respectively, and the test results are shown in Table 1 and Table 2:

[0050] Table 1 Test results of fully loaded vehicle (45 tons)

[0051] Fully loaded truck (45 tons) number of shifts Time from power-on to calculating load driving distance Delay function not activated 26 3m38s 1500m Delay function activation 3 23s 200m

[0052] Table 2 Test results of empty locomotive (8 tons)

[0053] Empty locomotive (8 tons) number of shifts Time from power-on to calculating load driving distance Delay function not activated 28 4m15s 1800m Delay function activation 8 32s 360m

[0054] It can be seen from the table that the system and method of the present invention greatly improves the efficiency of vehicle load calculation. Whether it is a fully loaded...

Embodiment 2

[0056] pass again image 3 and Figure 4 The comparison chart of the present invention further verifies the feasibility of the present invention. The horizontal axis in the figure is the time, and each line segment represents the gear change, the power interruption time of the current gear shift, and the power interruption time required for calculating the ramp; the numbers on the vertical axis are not actual. Meaning, only to distinguish relative sizes.

[0057] from image 3 It is not difficult to find that, after activating the delay function in the system, the power interruption time is prolonged, and the required time can be achieved by two shifts in one acceleration process except for the gear shift. In contrast, in the system without the delay function Figure 4 During the acceleration process, a total of four accelerations were carried out, from the vehicle static to the highest gear. In the first three times, except for the start gear, the power interruption time o...

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Abstract

The invention discloses a vehicle load learning system and method based on extending power interruption time, belonging to the technical field of vehicle load and ramp calculation. The vehicle load learning system comprises a load ramp learning module and a gear shift actuator module; The module judges whether the current vehicle driving state meets the conditions for extending the power interruption time; the shift actuator module controls the delayed closing clutch to extend the power interruption time, so that the load ramp learning module can complete the vehicle load learning. The vehicle load learning method adopts the vehicle load learning system and prolongs the power interruption time in the shifting process by activating the delay function in the vehicle load learning system to complete the self-learning of the ramp and the vehicle load. The present invention can effectively improve the efficiency of vehicle load calculation, and after the vehicle load information is learned, the gear shift returns to normal, and the power interruption time is no longer extended.

Description

technical field [0001] The invention belongs to the technical field of vehicle load and ramp calculation, and in particular relates to a vehicle load learning system and method based on prolonged power interruption time. Background technique [0002] In recent years, technical solutions for calculating the ramp and vehicle load have appeared in the automotive market. The core idea is: during the shifting process, the current ramp is calculated through the dynamic equation. At this time, although the vehicle load in the equation is unknown, Due to the power interruption, the acceleration caused by the component of gravity in the x direction is much greater than the acceleration caused by wind resistance and rolling resistance, so a more accurate ramp value will be obtained by substituting the default mass into the equation. After the power chain is recombined (the shift ends), the torque generated by the engine is brought into the dynamic equation, and the vehicle load can be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G19/02G01G23/00F16H61/02
CPCG01G19/02G01G23/00F16H61/0213Y02T10/84
Inventor 江涌龚奕鑫布里塔·沃内克汉斯·尤尔根·比纳尔施
Owner ZF COMMERCIAL VEHICLE SYSTEMS (QINGDAO) CO LTD
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