Enjoy Perfect Driving Control —— Basic knowledge of automobile brush ecu

Basic knowledge of automobile brush ecu

In fact, there are similarities between cars and human structures. It is impossible to operate only by hardware structures such as engine and transmission, and a series of actions can only be completed by a careful electronic control system through a hardware system. Just as the human brain controls body movements, the brain of a car is called Ecu.

When designing the hardware and software of the engine, the original car not only considers the power output, but also considers the economy, practicality, fuel consumption and increasingly strict emission standards, so the adjustment and setting of ECU tend to be balanced. At this time, in order to make the car more powerful, the most direct and effective means is to modify the ECU. In recent years, this method has been greatly welcomed by modified car owners. The reason is not only direct and effective, but more importantly, it is extremely cost-effective, and it is simply imperceptible from the appearance.

The ECU upgrade does not need to modify the engine.

There are many brands of ECU modification methods in the market: one is to replace the chip or directly update the packaging program corresponding to a certain model written for professional engineers; Another is to install external computer hardware, and write your own setup program as needed. Compared with the first software modification, the biggest advantage of plug-in computer is that it can supply oil at high speed and ignite at any time according to demand. Its diversified functions make it the first choice for large modified vehicles.

In order to obtain perfect power boost, accurate adjustment is very important.

As we all know, the modified ECU will adjust the fuel supply, ignition timing, turbine pressure and other parameters, and the fuel injection directly affects the air-fuel ratio. Theoretically, the most complete and sufficient mixing ratio of mixed oil and gas is 14.7, but in practice, this mixing ratio changes and needs to be analyzed and corrected by computer in time. Ignition timing is the time to ignite the mixed oil and gas.

External ECU (widely used in Japanese cars)

Theoretically, the ignition time is to make the oil and gas burn completely when the piston reaches the top, but in fact, the ignition time at high speed and low speed is different. Because the combustion of mixed oil and gas takes time, the ignition time should be advanced at a high speed to give it enough time to burn. The higher the turbine pressure, the greater the horsepower output of the engine. The pressure value is generally between 0.8-1.6bar. If the pressure is too high, the engine life will be reduced or it will be scrapped directly. E-Manage, an economical and practical entry model introduced by Grady, is the programmable computer with the highest market share in China. GReddy e-Manage is fully functional, easy to adjust, and the adjustment software can be downloaded.

In terms of flowmeter flow, e-Manage can also write the type of code that needs to be replaced in the vector setting option, and the computer will automatically convert the appropriate internal code, and then cooperate with the correction of air flow. Finally, in terms of actual setting reference, e-Manage has the functions of synchronous display, chart signal tracking, simple driving record and so on. All data can be directly stored in the host memory or even made into a file as a basic program after being adjusted for actual operation. E-Manage can not only adjust the fuel supply and ignition, but also remove the factory overpressure and fuel cut-off restrictions of turbine cars. This function of deceiving the original computer to receive the fixed Map sensor voltage can also be used to prevent the ECU from stopping when NA changes the turbine, and to correct the upper limit of airflow voltage according to the throttle opening and speed, so as to ensure that the problem of oil return and flameout will not occur after changing the large turbine.

In the fuel supply and ignition adjustment screen, F-Con always has three sets of tuners for more complete settings, and adopts a new design with variable vertical axis representative values, so that F-Con can cope with more diverse driving environments. In this way, with up to three groups of picture adjustment, the setting of correct oil supply and ignition time will be more complete. In addition, F-Con has been adjusted to solve the problem that in the past, the external injector did not stop supplying fuel when receiving fuel, but continued to inject fuel according to the corrected fuel quantity, which led to the explosion of unburned gas in the exhaust pipe, thus shortening the service life of the engine and turbine. When the owner receives the fuel and the throttle valve is fully closed, both the original vehicle and the additional fuel injectors will stop supplying fuel until the vehicle speed drops to the idle range or the throttle valve is reopened. This can not only avoid the above troubles, but also achieve the effect of saving fuel consumption.

Factory writing (widely used in European cars)

The so-called original chip transformation is to change the fuel supply and ignition procedures of the original computer, and then improve the power output efficiency. This modification method mostly appears in European cars, because there are many computers in European cars, such as ABS, TCS, and even air conditioners or automatic gearboxes have their own control systems, which control the vehicles quite comprehensively. However, if you use the jumper computer like a Japanese car, there will be many kinds of interference or failures, because the jumper computer must change all the induction signals before it can be input into the original computer. If it is a European car computer, it will be judged as abnormal, which will eventually lead to the computer entering a safe mode and unable to execute. The most serious thing is that the computer may deadlock when driving and the vehicle will lose power. Therefore, most European cars are modified by rewriting the original computer chip program, but with the update of technology, this upgrade method is rare.

Chip modification can be roughly divided into two types: the first type is that the original computer chip program of the old model cannot be rewritten, and the chip storing the fuel supply and ignition data in the original computer must be taken out, and then the rewritten fuel supply program is burned into a new chip and finally put back; The second is that the original computer itself has the function of updating the program. At this time, OBD can be used to detect the afterflow program of socket and computer, thus changing the fuel supply ignition program.

The most difficult thing to modify the chip is the program content. At present, the acquisition of program content can be divided into three types. The first is to buy chips that have been programmed abroad and install and replace them directly; The second way is that domestic agents read the program in the on-board computer, and then upload it to foreign manufacturers who modify the chip program, and then foreign engineers rewrite the program according to the demand, and then return it to domestic agents. The oil supply program of agents covers the original program. This way is equivalent to foreign technicians modifying chip programs for domestic car owners through remote control. At present, the third way is to use the program to enter the original computer system, and the domestic engineers will modify it according to the needs of the owner and the driving conditions and modification scope at that time. However, at present, there are not many shops in China that can independently write on-chip programs, so consumers should remember to pay more attention to the level and modification technology of the shops when purchasing.

Summary: No matter which upgrade method you adopt, you should remember that, as the saying goes, you should stop when you are ready. The life of the engine cannot be squeezed indefinitely. Although the engine will adjust the data conservatively when it leaves the factory, there is a limit to everything. If you cross the line slightly, the normal life of the engine will be damaged or even completely destroyed.