Method for calculating gross vehicle weight and fuel-saving control method

A total mass and vehicle technology, applied in the automotive field, can solve the problems of high device cost, rear leaf spring deformation, complicated installation, etc., and achieve the effect of low cost and fewer sensors

Active Publication Date: 2015-03-25
CHINA FIRST AUTOMOBILE
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The method of using the compression between the frame and the axle to calculate the load quality needs to arrange two displacement detection devices on the front and rear axles respectively. The cost of the device is high and the installation is more complicated. When the ground is on the ground

Method used

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  • Method for calculating gross vehicle weight and fuel-saving control method
  • Method for calculating gross vehicle weight and fuel-saving control method
  • Method for calculating gross vehicle weight and fuel-saving control method

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[0038] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0039] Such as figure 1 Shown is a schematic diagram of the hardware architecture used to calculate the total mass of the vehicle in the present invention, which includes: a gravity acceleration sensor, a controller, and an engine ECU. The gravity acceleration sensor is installed in the middle of the frame, the controller and the gravity acceleration sensor, the controller and the engine ECU are connected by CAN bus. The controller mainly includes single-chip microcomputer, memory and interface circuit.

[0040] The gravity acceleration sensor uses a three-axis acceleration sensor to monitor the longitudinal acceleration, longitudinal inclination, lateral inclination, lateral acceleration, and vertical acceleration of the vehicle in real time; the engine ECU monitors the current engine speed, current engine output torque, current gearbox position, and current clutch...

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Abstract

The invention provides a method for calculating gross vehicle weight. The method includes the steps that a gravity acceleration sensor, a controller and a vehicle original engine ECU which are installed on the vehicle are utilized, the controller figures out the current gross vehicle weight based on a vehicle driving kinetic equation by obtaining engine information, vehicle information and dip angle information and acceleration information and then outputs the current gross vehicle weight information outwards, wherein the dip angle information and the acceleration information are output by the gravity acceleration sensor. The vehicle information comprises the current gearbox gear speed ratio information, the final ratio information, the tier rolling radius information, the rolling damping coefficient information, the drag coefficient information, the conversion coefficient information of automobile rotary weight, transmission system mechanical efficiency information, clutch switching state information and the like. The invention further provides a fuel-saving control method. The method includes the steps that the current gross vehicle weight is obtained through calculation, the ratio of the current gross vehicle weight to vehicle full-load gross weight is converted into a loading state, and the ECU selects corresponding engine power output gears according to the received loading state information. The method for calculating the gross vehicle weight and the fuel-saving control method have the advantages that the number of used sensors is small, and calculation results are accurate.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for calculating the total mass of a load-carrying vehicle. Background technique [0002] The total mass of the vehicle is an indispensable and important input parameter in terms of fuel economy and safety control. Accurately obtaining the total mass of the vehicle is conducive to the better application of related control systems, and it is also conducive to the driver's control of his driving behavior and driving process. risk in. It should be noted that the total mass of the vehicle is equal to the sum of the unladen mass of the vehicle and the loaded mass of the vehicle, and the unladen mass of the vehicle is a known fixed value, so the total mass of the vehicle and the loaded mass of the vehicle can be converted into each other, that is, the total mass of the vehicle and The technique for vehicle load mass is in effect the same. [0003] The ratio of the current...

Claims

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Application Information

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IPC IPC(8): G01G19/02G01G19/08
Inventor 李俊禧
Owner CHINA FIRST AUTOMOBILE
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