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
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[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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