Prompt method for vehicle to save oil

A technology for automobile and voice prompts, which is applied in control/adjustment systems, instruments, computer control, etc., and can solve the problem of no fuel-saving prompts for vehicles

Inactive Publication Date: 2009-02-18
DONGFENG AUTOMOBILE COMPANY
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  • Claims
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AI Technical Summary

Problems solved by technology

[0002] At present, there is no vehicle fuel-saving prompter on the vehicle. When the driver fails to control the economic gear, it provides a sound or voice to prompt or remind the driver to make an upshift operation, so that the engine can run in a relatively fuel-efficient economic zone.

Method used

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  • Prompt method for vehicle to save oil
  • Prompt method for vehicle to save oil
  • Prompt method for vehicle to save oil

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Embodiment Construction

[0043] 1. Working principle scheme

[0044] 1. The present invention uses computer technology to collect engine speed pulse signals and vehicle speed pulse signals in real time, and carry out shaping, isolation and anti-interference processing to the signals. Gear judgment must be carried out at a uniform speed.

[0045] 2. Collect the number n of speed pulse signals per revolution of the engine 0 and time t 0 (s), according to the formula V 0 =60 / t 0 (r / min), calculate the engine speed V 0 .

[0046] 3. Collect the vehicle speed pulse signal n of each wheel revolution 1 and time t(s). According to the formula V 1 =3.6*2πR / t, and the known wheel rolling radius R(m), calculate the vehicle speed V 1 (km / h).

[0047] 4. According to the engine speed V 0 and vehicle speed V 1 Calculate the gear ratio B of the gearbox, compare B with the standard gear ratio X in Table (3), and find out the corresponding working gear D1. The calculated variable speed ratio B takes the v...

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Abstract

An oil-saving prompting method for car includes such steps as storing a calculation module for the rotation speed of engine and car speed, the car speed-gear position reference table A, car speed flag bit inquiring table B and gear position inquiring table C in computer, acquiring pulses about the rotation speed of engine and car speed, calculating the rotation speed V0 and car speed V1, storing them in RAM, calculating speed varying ratio B, searching relative standard speed varying ratio X from table C, searching relative gear position D1, storing it in RAM, searching standard car speed V2 from table B, searching relative car speed flag Z, changing the Z from 0 to 1, Changing the relative flag Z in table A from 0 to 1, searching gear position D2, comparing D1 with D2, not prompting if D1=D2, or detecting interrupt signal if not, and prompting for increasing gear position if there is no interrupt signal and D1 is less than D2.

Description

technical field [0001] The invention relates to a fuel-saving reminder method for automobiles, which is to calculate the current working gear value and optional gear after sensing the current working speed of the engine and the running speed of the whole vehicle, and judge whether the whole vehicle is running at a constant speed and the current working gear Whether it is an economical gear, inform the driver how to increase the gear to achieve fuel economy. Background technique [0002] At present, there is no vehicle fuel-saving prompter on the vehicle. When the driver fails to control the economic gear, it provides a sound or voice to prompt or remind the driver to make an upshift operation, so that the engine can run in a relatively fuel-efficient economic zone. . Contents of the invention [0003] The purpose of the present invention is to provide a fuel-saving reminder method for a car. When the driver fails to control the economical gear, the crisp and gentle female...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/00B60W10/06B60W10/10G05B15/02B60W10/11
Inventor 沈健王思聪潘开胜曾迥立李祖元曹海红
Owner DONGFENG AUTOMOBILE COMPANY
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