Remaining driving mileage processing method of automobile combination meter

A technology of driving mileage and combination instrument, which is used in instruments, liquid/fluid solids measurement, engine lubrication, etc., to achieve the effect of ensuring accuracy and reliability

Inactive Publication Date: 2010-03-03
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the invention is to overcome the deficiencies

Method used

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  • Remaining driving mileage processing method of automobile combination meter
  • Remaining driving mileage processing method of automobile combination meter
  • Remaining driving mileage processing method of automobile combination meter

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[0017] The present invention will be further described below in conjunction with the accompanying drawings of the specification.

[0018] figure 1 It is a flow chart of a method for processing the remaining mileage of an automobile combination instrument, including: a module 20 for judging the engine state, a module 30 for judging whether to refuel, a module 40 for determining the initial fuel level of the fuel tank, a module 50 for determining the fuel consumption of the fuel tank, and remaining Fuel quantity calculation module 11, average fuel consumption calculation module 13, and remaining mileage calculation module 12. The entire calculation process runs cyclically in the processor of the combination meter, and the running cycle can be set to 20ms.

[0019] The remaining mileage is the output of the module 12, which is obtained by dividing the remaining fuel amount by the average fuel consumption. The remaining fuel is output by the module 11, and the average fuel consumption...

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Abstract

The invention discloses a remaining driving mileage processing method of an automobile combination meter, belonging to the technical field of automotive electronics. During the normal driving processof the automobile, the remaining oil mass is obtained according to the difference between the original oil mass and the oil consumption of an oil box stored in a storer of the combination meter, and then the remaining oil mass is divided by the average oil consumption, thus obtaining the remaining driving mileage. The engine status is judged according to engine speed signals, when an engine is judged to be in starting process, whether a driver needs to oil the automobile is judged further according to the signal change of a liquid level sensor, and the original oil mass stored in the storer isrenewed after the automobile is judged to need to be oiled. The method avoids the display error of the remaining driving mileage resulted from the deviation of the signal of the liquid level sensor due to road condition change during the running process.

Description

technical field [0001] The invention belongs to the technical field of automobile electronics, and in particular relates to a method for processing the remaining mileage of an automobile combination meter. Background technique [0002] The remaining mileage is usually one of the display contents of the combination instrument of a mid-to-high-end car, and its accuracy directly affects the use of the vehicle. At present, the remaining mileage displayed by the vehicle combination instrument is based on the fuel tank fuel level signal, which is obtained by dividing by the average fuel consumption after filtering. Through the filtering method, the fuel quantity signal fluctuation caused by the vibration of the fuel tank liquid level sensor caused by factors such as road bumps and rapid acceleration and deceleration can be filtered out. However, in the case of long-term parking on a large slope, due to the pitch of the vehicle, the float of the liquid level sensor moves relative ...

Claims

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Application Information

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IPC IPC(8): G01C22/00G01F23/00
Inventor 高锋吴存学王涛汪应兵
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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