Bosch 2008 User Manual download pdf (Page 35)

Gasoline injection components | A33

2008 | 2009 Bosch Automotive Aftermarket

Coolant-temperature sensor

Systems:

D, L, LH-Jetronic, K-Jetronic (with Lambda sensor), KE-Jetronic, KE-Motronic, Motronic

Purpose:

The coolant-temperature sensor measures the temperature in the coolant circuit and

provides the electronic control unit with an electric signal. The sensor comprises an NTC

thermistor embedded in a threaded sleeve or a plastic casing. The “coolant temperature”

signal is particularly important for the starting and warm-up phase.

Part number:

0 261 220 ..., 0 280 130 ...

Crankshaft speed sensor

System:

Motronic

Purpose:

A ferromagnetic gear wheel with reference mark (tooth gap) is attached to the crankshaft.

The speed sensor scans the tooth sequence. The electronic control unit uses the signal to

calculate the crankshaft position and speed. Some systems are ﬁtted with two sensors.

Crankshaft position and speed are then measured separately.

Part number:

0 261 210 ...

Electric fuel pumps/in-tank units

Systems:

All systems

Purpose:

The electric fuel pump (EKP) must supply the engine with sufﬁcient fuel at the pressure

required for injection under all operating conditions. The EKP is also increasingly assuming

the function of a pre-supply pump for modern direct-injection systems in both gasoline and

diesel engines. Principal requirements: Delivery rate between 60 and 200 l/h at rated voltage,

pressure in fuel system between 300 and 450 kPa (3...4.5 bar), build-up of primary pressure

as of 50 % to 60 % of rated voltage; cold-starting operation is deﬁnitive for this.

Part number:

0 580 254 ..., 0 580 303 ..., 0 580 305 ..., 0 580 309 ..., 0 580 310 ..., 0 580 313 ..., 0 580 314 ...,

0 580 453 ..., 0 580 464 ..., 0 582 980 ..., 0 587 010 ..., 0 986 580 ..., etc.

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 74 75

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Bosch 2008 User Manual Page 35