gf0707p6000ke

Component description for the hot film MAF sensor

유형 gf · 주제 07.07 · 버전 0103 · 2008-03-25

적용 대상: ENGINE 271.921 /944 /946 /948 up to Model Year 8 ENGINE 271.940 in MODEL 203 up to Model Year 8 ENGINE 271.940 in MODEL 209 ENGINE 271.941 /955 /956

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위치

기능 그룹 1 엔진 › 07 혼합물 처리 › 07.07 에어플로우센서, 에어매스센서 — 시리즈 203 · 시리즈 209

엔진/변속기에도 적용: 271 921, 271 940, 271 941, 271 944, 271 946, 271 948, 271 955, 271 956

GF07.07-P-6000KE

Component description for the hot film MAF sensor

19.1.05

ENGINE 271.921 /944 /946 /948 up to Model Year 8

ENGINE 271.940 in MODEL 203 up to Model Year 8

ENGINE 271.940 in MODEL 209

ENGINE 271.941 /955 /956

Component description for the hot film MAF sensor

P07.07-2029-01

Arrangement

B2/5 Hot film MAF sensor

The hot film MAF sensor is located directly at the outlet of the air filter housing.

Task

The hot film MAF sensor (HFM) detects the air mass sent to the engine and sends an appropriate voltage signal to the ME control unit (N3/10).

Component description for the hot film MAF sensor

P07.07-2028-06

Design

9/3 Flow rectifier

9/4 Housing

9/5 Electrical connection

Pin 1: Reference mass

Pin 2 : Circuit 87

Pin 3: Sensor voltage

Pin 4 : Power ground

Pin 5: blank

9/6 Adhesive molding

9/8 Hybrid printed board (electronics)

9/9 Cover

B2/5 Hot film MAF sensor

Function

The integral electronics in the hot film MAF sensor controls the nominal temperature (of about 160°C) of the heating resistor. The temperature of the heating resistor is detected via a sensor resistor.

If a temperature change occurs as a result of an increased or reduced air flow, the electronics correct the voltage at the heating resistor until the specified temperature is achieved again.

This regulating current is evaluated by the hot film MAF sensor and converted into a sensor voltage.

The sensor voltage is used by the ME control unit as a measure for the applied air mass.