gf1440b3007a

SCR compressed air pressure sensor, component description

Typ gf · temat 14.40 · wersja 0300 · 2016-02-12

Dotyczy: Cumbustion engine 924.9 with Vehicle 368.### #A, 368.### #S, 368.### #M, 368.### #D, 384.### #A, 384.### #S, 384.### #M, 384.### #D, 437.### #A, 437.### #S, 437.### #M, 437.### #D, 628.### #A, 628.### #S, 628.### #M, 628.### #D, 685.### #A, 685.### #S, 685.### #M, 685.### #D, 693.### #A, 693.### #S, 693.### #M, 693.### #D, 694.### #A, 694.### #S, 694.### #M, 694.### #D, 695.### #A, 695.### #S, 695.### #M, 695.### #D, 958.### #A, 958.### #S, 958.### #M, 958.### #D, 970.### #A, 970.### #S, 970.### #M, 970.

Niedostępne w języku „pl”; wyświetlono w języku Angielski.

Umiejscowienie

Grupa funkcyjna 1 Silnik › 14 Kolektor wydechowy, hamulec silnikowy, instalacja oczyszczania spalin › 14.40 Układ oczyszczania spalin, AdBlue — Seria 368 · Seria 382 · Seria 384 · Seria 437 · Seria 444 · Seria 628 · Seria 633 · Seria 634 · Seria 685 · Seria 693 · Seria 694 · Seria 695 · Seria 949 · Seria 950 · Seria 952 · Seria 953 · Seria 954 · Seria 957 · Seria 958 · Seria 970 · Seria 972 · Seria 974 · Seria 975 · Seria 976 · Seria 979

EinPAS 15 Silnik › 15.40 Układ wydechowy/ układ oczyszczania spalin › 15.40.12 Czujnik/ przełącznik/ wiązka przewodów — Seria 368 · Seria 382 · Seria 384 · Seria 437 · Seria 444 · Seria 628 · Seria 633 · Seria 634 · Seria 685 · Seria 693 · Seria 694 · Seria 695 · Seria 949 · Seria 950 · Seria 952 · Seria 953 · Seria 954 · Seria 957 · Seria 958 · Seria 970 · Seria 972 · Seria 974 · Seria 975 · Seria 976 · Seria 979

Dotyczy też silników/skrzyń biegów: 924 9**, 926 9**

GF14.40-B-3007A

SCR compressed air pressure sensor, component description

12.02.16

Cumbustion engine 924.9 with Vehicle 368.### #A, 368.### #S, 368.### #M, 368.### #D, 384.### #A, 384.### #S, 384.### #M, 384.### #D, 437.### #A, 437.### #S, 437.### #M, 437.### #D, 628.### #A, 628.### #S, 628.### #M, 628.### #D, 685.### #A, 685.### #S, 685.### #M, 685.### #D, 693.### #A, 693.### #S, 693.### #M, 693.### #D, 694.### #A, 694.### #S, 694.### #M, 694.### #D, 695.### #A, 695.### #S, 695.### #M, 695.### #D, 958.### #A, 958.### #S, 958.### #M, 958.### #D, 970.### #A, 970.### #S, 970.### #M, 970.### #D, 972.### #A, 972.### #S, 972.### #M, 972.### #D, 974.### #A, 974.### #S, 974.### #M, 974.### #D, 975.### #A, 975.### #S, 975.### #M, 975.### #D, 976.### #A, 976.### #S, 976.### #M, 976.### #D, 979.### #A, 979.### #S, 979.### #M, 979.### #D

Cumbustion engine 926.9 with Vehicle 368.### #M, 368.### #D, 368.### #L, 382.### #M, 382.### #D, 382.### #L, 384.### #M, 384.### #D, 384.### #L, 437.### #M, 437.### #D, 437.### #L, 444.### #M, 444.### #D, 444.### #L, 628.### #M, 628.### #D, 628.### #L, 633.### #M, 633.### #D, 633.### #L, 634.### #M, 634.### #D, 634.### #L, 685.### #M, 685.### #D, 685.### #L, 693.### #M, 693.### #D, 693.### #L, 695.### #M, 695.### #D, 695.### #L, 949.### #M, 949.### #D, 949.### #L, 950.### #M, 950.### #D, 950.### #L, 952.### #M, 952.### #D, 952.### #L, 953.### #M, 953.### #D, 953.### #L, 954.### #M, 954.### #D, 954.### #L, 957.### #M, 957.### #D, 957.### #L, 958.### #M, 958.### #D, 958.### #L

SCR compressed air pressure sensor, component description

B14.40-0055-08

1 Metering unit

Arrangement

The compressed air pressure sensor (4) is fastened to the outside of the metering unit (1). The metering unit (1) is located close to the last cylinder head cylinder.

4 SCR (17B06) compressed air pressure sensor

Task

The compressed air pressure sensor (4) captures the AdBlue pressure at a measuring point inside the metering unit (1) and transmits the information to the engine control module (MR), as an electrical tension signal.

SCR compressed air pressure sensor, component description

B14.40-0026-11

Composition

The compressed air pressure sensor (4) consists of a threaded stainless steel housing and an electrical connector.

The inside of the compressed air pressure sensor contains, as a measuring element, a silicon membrane fitted with measuring strips. These measuring strips are electrical resistors that, during their expansion, modify their resistance (piezoresistive principle). The compressed air pressure sensor (4) is fitted with a drilling, through which the compressed air can penetrate up to the membrane. The compressed air pressure sensor (4) is an active sensor. i.e., it is supplied with a tension.

Function

The air actuating on the compressed air pressure sensor (4), presses the internal membrane. This pressure that causes the membrane, when expanding, to modify its electrical resistance on the measuring strips. With these pressure alterations, occurs the increase or decrease of the measuring strips resistance

The variations of electrical resistance are transmitted in defined intervals as analog signals to the control module (MR).

The control module (MR) calculates the corresponding pressure, starting from the resistance values.