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Emulator MAF and Oxygen Sensor SK-04A V5 User Guide

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Emulator MAF and Oxygen Sensor SK-04A V5 User Guide Emulator MAF and Oxygen Sensor SK-04a v5 User Guide www.sdsauto.com Content Page 1 Completeness 2 2 Principle of operation and purpose 3 3 Hardware installation 4 3.1 Connecting to the oxygen sensor 5 3.2 Connecting to Mass Airflow Sensor (MAF, MAP) 6 3.3 Switching between tables of sensor 7 4 Connecting to a computer, software 8 4.1 Introduction to software 9 4.1.1 Output of the current data on the chart. 10 4.1.2 Settings 12 5 Emulator settings 14 5.1 Training 14 5.2 Emulation (formation) of the analog signal 16 5.2.1 Two - dimensional table and MAF emulation 18 5.2.2 Response to the sudden depressing of the accelerator 18 5.3 Setting the correct display of fuel consumption 21 6 Possible malfunctions and their solutions 22 7 Warranty 23 1. Completeness №№ Name Number Notes 1 Electronics module 1 2 User guide 1 3 Software CD 1 2 2. The principle of operation and purpose Emulator SK-04 is designed to recreate the signal of oxygen sensor and any analog signal in the range 0 ... 5V. It is possible to correct the mixture to separate modes of operation of the motor by means of a computer. Recreating zirconium oxygen sensor signal is carried by analyzing signals from the air flow sensor (MAF) and the fuel injector and then comparing them to the table. The base table is written by the manufacturer or in the process of self-emulation. If your car is equipped with only the absolute pressure sensor (MAP), the emulator will calculate the amount of air required for the formation of an oxygen sensor signal. It is possible to switch the tables of emulation with an external switch. This is necessary, for example, when you go to maximum or economy mode, propane or gasoline (for natural gas equipment). Recreating the analog signal is performed in accordance with a three-dimensional map. The table (map) prescribed voltage at the output of the emulator, which are tied to the speed, injection time or the air flow. Emulator SK-04 is equipped with software that allows you to connect it to your computer, read and write all parameters in real time, to read the fuel, produce setting without stopping the engine. It provides output to the chart. You can save and record the tables of emulation signal. The device can work with MAF with both analog and pulse outputs. 3 3. Emulator Installation Emulator must be installed in a place protected from excessive heat and moisture. Complete wiring schematic is shown in Fig. 3.1. Figure 3.1. Emulator wiring schematic SK-04 Connect the power supply to the system. Black wire is required to be connected to the ECU body (control unit) or to the vehicle body near the computer. 12 Volt power supply can be taken from the car fuse box or power supply wire of the injector. When you connect from the fuse holder you are to find such type of a fuse, which voltage is only present while the ignition and then connect the red wire to the fuse. The blue wire “1” is connected to a control (negative) wire Injector. 4 The blue wire “2” is connected only if necessary to emulate 2 oxygen sensors located before the catalytic converter. This wire must be connected to the control wire injector, relating to the 2nd oxygen sensor. 3.1. Connecting to the oxygen sensor. Connecting to the oxygen sensor is made after the procedure of emulator self-instruction (if necessary) To do this, we must find two signal wires of the oxygen sensor by measuring the voltage on the wires connected to the sensor with a fully warmed up and running engine. For zirconium sensor the positive signal is the one, when the wire tension which varies from about 0.1V to 0.9V (sometimes from 0.5 to 1.5V) with respect to the vehicle body with an interval 0.5 – which constitutes 2 seconds with the engine at idle. As a rule, the blue wire (+) and white color (-) refer to the signal wire. The voltage at the negative signal wire is typically 0 volts. In some cases, the voltage on this wire up to 0.5 volts. The two wires of the same color are used to power the heater of the oxygen sensor. The absence of voltage with the above parameters indicates a possible malfunction of the zirconium oxygen sensor. The emulator is connected to the two signal wires of the oxygen sensor. Wiring according to Fig. 3.2. If your car is equipped with single-wire of the oxygen sensor, so the white wire from the emulator should be left free. During training, it is desirable that the oxygen sensor has been connected according to the standard scheme, and the emulator disconnected. If your car is the oxygen sensor downstream of the catalytic converter, you can use the emulator catalyst for the oxygen sensor №2, while noting this in the emulator program. Figure 3.2. Wiring zirconium oxygen sensor, located behind the catalytic converter or emulator mode. 5 3.2. Connecting to MAS (MAF, MAP) You must connect the air flow sensor (MAS, MAF) to emulator or manifold pressure sensor. Wiring MAS to the signal wire is shown in Fig. 3.1. in case of only the sensor emulation. If you need MAS correction of the signal or pressure sensor, it should be connected as shown in Fig. 3.3. MAS basing diagram may differ from the one shown above. The signal wire is determined by proportion of the voltage to the weight of the car. With ignition on and the engine stopped, the voltage on this wire should be approximately 1V. When the engine is running, the voltage should increase by pressing the gas pedal. In some models of the engines it can be used MAS with frequency output – the voltage on the signal wire of the sensor does not change. If you have a MAS, in the settings of the emulator you must select the type of “Digital” mode. Figure 3.3. Connection for signal correction of air flow sensor (the sensor may have different pinout). If you have a mass airflow sensor with pulse output, connect the emulator to start the engine and measure the frequency of the pulses from the mass airflow sensor at idle and under heavy throttling (the measurement function of frequency is present in many digital multimeter instruments). If the frequency to any modes exceeded the value of 1000 Hz, it should be noted to set “Frequency range of a mass airflow sensor equals to more than 1kHz.” You can connect to the absolute pressure sensor (MAP), which is necessary to specify in the program for proper work of the emulator. If it is necessary to emulate mass airflow sensor - connect the red wire to the signal of the pressure sensor. On the black wire there will be the result of emulation of mass airflow sensor. Do not forget to specify the type of sensor connected in the program! 6 When using the MAP sensor, a temperature correction is provided to correctly calculate the mass flow rate of the air. Therefore, turn on the function "take into account the temperature" in the settings. (Note, in some old "spade" flowmeters, the temperature is not taken into account). The temperature sensor must be located in the intake air flow. We recommend to install it after the throttle. * The temperature sensor is delivered starting with the software version v5. 3.3. Switching the tables of the oxygen sensor The emulator contains 2 tables of the oxygen sensor, which can be switched by changing the voltage at the yellow wire. If the yellow wire is not connected anywhere – it is used the table №1 of the oxygen sensor. With the closure of the wire on the body (or the supply of voltage falls below 2 volts) - the table №2 is used. 7 4. Connecting to a computer, software The emulator has a connector for connecting to the USB port of a PC. After the first connection, install the drivers for the emulator that are on the CD-ROM in the folder “FTDI”. Emulator is a standalone device, and the computer is necessary only for fine-tuning the device. Self-training can be done without a computer. The device allows you to store, view and record all data on the computer. For this there is a number of special buttons: - if you click on this button you will read the data from the emulator in a table or chart. The old data will be replaced with the new one. - if you click on this button, the data in the table will be recorded in the emulator. - opens a previously saved on your computer table or chart. Afterwards, it can be recorded in the emulator. - saves the table on your computer. Afterwards, it can then be recorded in the other device. If instead of text ????????????? You must install the support for Cyrillic 1. In Control Panel, click on "Regional and Language Options" 2. Select the "Advanced" 3. In the "language programs that do not support Unicode," select "Russian", and click "apply" 8 4.1. Introduction to software Software supplied with the emulator. The software allows to read and save the parameters of the signals from the sensors in real time, make the setting of the emulator. It is possible to visualize the parameters in the form of diagrams and charts. You can read, edit and write an emulator table correction, save them on your computer, create templates of the tables.
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