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Accelerator pedal torque request calibration method

A technology of accelerator pedal and calibration method, applied in the direction of force/torque/work measuring instrument calibration/test, instruments, measuring devices, etc., can solve the problems of large shift shock and poor vehicle speed, and reduce the shift shock , Reduce the gradient of driving force change, meet the effect of climbing and accelerating

Active Publication Date: 2019-09-10
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a method for calibrating the torque request of the accelerator pedal to solve the problems that the vehicle speed is not easy to control and the impact of shifting is large when the vehicle is at a low speed

Method used

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  • Accelerator pedal torque request calibration method
  • Accelerator pedal torque request calibration method
  • Accelerator pedal torque request calibration method

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Embodiment Construction

[0058] The present invention will be further described below with reference to the drawings and embodiments: Taking a car with an engine as a power source as an example, the basic parameters of the car are shown in Table 1 below.

[0059] Table 1: The basic parameter table of the vehicle in the embodiment of the present invention

[0060]

[0061]

[0062] The external characteristic curve of the engine in the embodiment of the present invention is as follows figure 1 As shown, the entire accelerator pedal torque request calibration method is as follows figure 2 Shown.

[0063] The specific steps are as follows:

[0064] Step 1: First, determine the balance curve of the driving force and driving resistance of the car according to the basic parameters related to the driving dynamics of the car. The driving force curve is determined as follows:

[0065]

[0066] Where T tq Is the driving torque at the crankshaft end of the engine, i g Is the transmission ratio, i 0 Main reducer transmis...

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Abstract

The invention relates to an accelerator pedal torque request calibration method, belonging to the technical field of vehicle torque demand calibration. Firstly, determining a driving force and runningresistance curve of an automobile according to the basic parameters of the automobile; then determining a driving force request curve of the wheel end in 100% accelerator pedal; calculating the driving force request curve of the wheel end in partial accelerator opening; and finally, converting the driving force request of the accelerator pedal at the wheel end to a crankshaft end of the engine, so as to obtain a map of the accelerator pedal required torque required to be output by the engine under a plurality of gear positions. The accelerator pedal torque request calibration method disclosedby the invention is novel and practical, and can reduce the shift impact; and the controllability to the automobile speed of the driver is achieved by forming an accelerator pedal insensitive area near the running resistance curve of the automobile; therefore, the driving quality of the automobile is effectively improved.

Description

Technical field [0001] The invention belongs to the technical field of vehicle torque demand calibration, and in particular relates to an accelerator pedal torque request calibration method. Background technique [0002] With the development of the automobile industry, consumers have higher and higher requirements for the driving quality of automobiles, and electronic throttles with greater design freedom have emerged. By configuring the mapping relationship between the accelerator pedal and the engine torque on demand, the non-linear correspondence between the accelerator pedal and the throttle opening is realized to meet the different driving needs under different driving groups and operating conditions. The electronic throttle brings design freedom for the mapping relationship between the accelerator pedal and the requested engine torque, but it also triggers a debate about how much torque the driver really wants the engine to output when the driver steps on the pedal. The ma...

Claims

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Application Information

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IPC IPC(8): G01L25/00G06F17/50B60W40/10
CPCG01L25/003B60W40/10G06F30/15
Inventor 管欣金号卢萍萍段春光
Owner JILIN UNIV
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