튜닝자료실

우리 앤진에대한 맵핑의 기초부분...

다이어그램이 잘 그려진게 있어서 올려봅니다.

차가 점저 전자식 스로틀이 되면서 사용자의 패달눌르는 정도를 어떻게 앤진 토크로 바꾸느냐에 대한내용인데...

예전처럼 그냥 와이어식으로 스로틀만 열었다 닫았다 하는게 아니라 아래와같은 프로세스를 거치면 된다 생각하시믄 됩니다.

요게 기본이고 여기에 또 붙는것들이..

이렇게 됩니다. ㅎㅎ

그리고 아래는

Pressure Sensors:

• MAP - Manifold Absolute Pressure sensor located inside the intake manifold, measures the pressure of the air before it enters the engine
• TIAP - Throttle Inlet Absolute Pressure sensor located before the throttle blade, measures the pressure of the air before the throttle
• SCIAP - Supercharger Inlet Absolute Pressure sensor located before the supercharger inlet (between the throttle and the supercharger), measures the pressure of the air before the supercharger and after the throttle
• TCIAP - Turbocharger Inlet Absolute Pressure sensor located before the turbocharger inlet, measures the pressure of the air right before the turbocharger
• BARO - Barometric Pressure sensor, measures the pressure of the outside air

Temperature Sensors:

• IAT - Inlet Air Temperature sensor located in the MAF sensor (typically), measures the temperature of the air before it enters the throttle
• IAT2 - Inlet Air Temperature 2 sensor located inside the intake manifold, measures the temperature of the air before it enters the engine

Airflow Sensors:

• MAF - Mass Air Flow sensor typically located before the throttle, measures the mass flow of air entering the throttle
• MAF2 - Mass Air Flow 2 sensor typically located before the throttle, used for twin turbo charged applications only.

Now you may think this is all so very easy, but there is a slight complication in that the ECM doesn't have all five of the pressure sensor inputs available at once, it only has three. It has a MAP sensor input and two ambient air pressure sensor inputs called AAP1 and AAP2 which are mapped to the required setting using the pressure sensor configuration calibration. Additionally, some of these values are calculated based on losses through various componenets. eg. for NA applications, the TIAP can be calculated from BARO by modelling the air filter losses.

Pressure Sensor Config:

• NA-MAP: NA application with MAP sensor fitted. Baro and TIAP are calculated.
• NA-MAP-TIAP: NA application with MAP and TIAP sensor fitted. AAP1 = TIAP. BARO is calculated.
• NA-MAP-BARO: NA application with MAP and BARO sensor fitted. AAP1 = BARO. TIAP is calculated.
• SC-SCIAP-TIAP: SC application with MAP, SCIAP and TIAP sensor fitted. AAP1 = SCIAP (Note: SCIAP has it's own linear and offset). AAP2 = TIAP. BARO is calculated.
• SC-SCIAP-BARO: SC application with MAP, SCIAP and BARO sensor fitted. AAP1 = SCIAP (Note: SCIAP has it's own linear and offset). AAP2 = BARO. TIAP is calculated.
• TC-TIAP-TCIAP: TC application with MAP, TIAP and TCIAP sensor fitted. AAP1 = TIAP. AAP2 = TCIAP. BARO is calculated.
• TC-TIAP-BARO: TC application with MAP, TIAP and BARO sensor fitted. AAP1 = TIAP. AAP2 = BARO. TCIAP is calculated.