BMW 5 Series: Solenoid valve injector

Measures at the solenoid valve injector

The following graphic illustrates the differences between the EURO 6b and EURO 6c versions:

EURO 6 measures, solenoid valve injector

1. Solenoid valve injector HDEV5 Bx8 engine, EURO 6b
2. Solenoid valve injector HDEV5 EVO Bx8 engine, EURO 6c
3. Solenoid valve injector HDEV6 Bx8TU engine, EURO 6c

1. Injector seat
2. Injection pattern and volumetric distribution

The Bx8TU engines use the HDEV6 solenoid valve injector by Bosch. Due to the more stringent exhaust gas emission regulations required to meet the EURO 6c exhaust emission standards, technical changes were again made to the solenoid valve injectors.

Due to the fuel system pressure increase from 200 bar to 350 bar, the solenoid valve injectors HEDV6 were optimized using suitable materials and coatings. The injection pattern and volumetric distribution have not changed compared with the HDEV5 EVO.

The repair instructions that are currently valid must be carefully followed when removing and installing the injectors in Service. An excessive rotational angle at the injector shank, and excessive tensile and compressive forces during removal and installation can lead to damage and therefore leaks in the fuel system.

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