Supercharge Your Innovation With Domain-Expert AI Agents!

Gear shifting map generation method and device

A vehicle and wheel technology, which is applied in the direction of transmission control, geared components, instruments, etc., can solve the problems of poor power and reduced power, and achieve the effect of reducing fuel consumption and maintaining power.

Active Publication Date: 2016-08-10
CHERY AUTOMOBILE CO LTD
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above method reduces the fuel consumption of the vehicle and does not increase the cost, the dynamic performance of the vehicle will be reduced, resulting in poor dynamic performance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gear shifting map generation method and device
  • Gear shifting map generation method and device
  • Gear shifting map generation method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] An embodiment of the present invention provides a method for generating a shift map, see figure 1 , the method includes:

[0066] Step 101: Establish a one-dimensional power economy simulation model of the vehicle, and obtain multiple sets of first test data for vehicle simulation through the simulation model. Each set of first test data in the multiple sets of first test data includes engine speed, Throttle opening, wheel torque and specific fuel consumption.

[0067] Step 102: Determine the optimal economic curve of the vehicle according to multiple sets of first test data, the optimal economic curve includes the corresponding relationship between engine speed and engine power.

[0068] Step 103: Obtain the initial first pedal map and first shift map of the vehicle, and determine the first wheel torque map of the vehicle according to the first pedal map and the first shift map. The pedal map includes accelerator opening, engine speed and The corresponding relationsh...

Embodiment 2

[0073] An embodiment of the present invention provides a method for generating a shift map, see Figure 2-1 , where the method includes:

[0074] Step 201: Establish a one-dimensional power economy simulation model of the vehicle, and obtain multiple sets of first test data for vehicle simulation through the simulation model.

[0075] In the mid-stage of project development, there is a PE performance development sample vehicle and the status (normal state) and related parameters (models, etc.) of the development sample vehicle are confirmed. A one-dimensional power economy simulation model of the whole vehicle is established in CRUISE software, and the vehicle is obtained through the simulation model. Multiple sets of first test data are simulated, and each set of first test data in the multiple sets of first test data includes engine speed, throttle opening, wheel torque, fuel consumption rate and the like.

[0076] Step 202: Obtain multiple sets of real second test data of ...

Embodiment 3

[0131] An embodiment of the present invention provides a device for generating a shift map, see image 3 , where the device includes:

[0132] Establishing module 301, used to establish a vehicle one-dimensional power economy simulation model of the vehicle;

[0133] The first obtaining module 302 is used to obtain multiple sets of first test data of vehicle simulation through the simulation model, and each set of first test data in the multiple sets of first test data includes engine speed, throttle opening, wheel torque and fuel consumption rate ;

[0134] The first determination module 303 is configured to determine the optimal economic curve of the vehicle according to multiple sets of first test data, where the optimal economic curve includes the corresponding relationship between engine speed and engine power;

[0135] The second acquiring module 304 is used to acquire the initial first pedal map and the first shift map of the vehicle;

[0136] The second determinatio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a gear shifting map generation method and device and belongs to the field of automobiles. The gear shifting map generation method comprises the steps that a one-dimensional dynamic economy simulation model of a whole vehicle is established, multiple groups of first test data obtained from vehicle simulation are acquired through the simulation model, and each group of multiple groups of first test data comprises an engine rotation speed, accelerator opening, wheel torque and a fuel consumption rate; the optimal economy curve of the vehicle is determined according to the multiple groups of first test data; an initial first pedal map and a first gear shifting map of the vehicle are acquired, and a first wheel torque map of the vehicle is determined according to the first pedal map and a first gear shifting map; the wheel power map of the vehicle is determined according to the first wheel torque map; a second gear shifting map after vehicle optimization is determined according to the wheel power map and the optimal economy curve. According to the method, the dynamic property can keep unchanged or be even improved on the premise that the oil consumption is reduced.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a method and device for generating a shift map. Background technique [0002] With the development of social economy, the penetration rate of automobiles continues to increase, and domestic automobile sales are rising steadily. Automatic transmission vehicles have the advantages of convenient operation, safety and labor saving, and are becoming more and more popular; automatic transmission vehicles do not require the driver to manually adjust the gear of the vehicle. , but automatically adjust the gear position of the vehicle according to the shift map in the vehicle. [0003] In order to reduce the fuel consumption of the vehicle, the vehicle manufacturer reduces the shift speed in the shift map as a whole, thereby reducing the fuel consumption of the vehicle. [0004] In the process of realizing the present invention, the inventor finds that there are at least the following problems...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F17/50
CPCG06F30/367F16H61/0213
Inventor 李敏何艳则牛大旭朱健强
Owner CHERY AUTOMOBILE CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com