Description
(1) petrol injector
"a" 2-way black connector
Make: BOSCH
The petrol injectors consist of 2 parts
- An electrical control part
- A fuel spraying part
Each petrol injector is commanded separately by the engine ECU
Role
The petrol injectors spray the fuel needed for the engine to work
Function
Operation of the petrol injectors on each electrical pulse
- The injector's needle is lifted from its seat
- The pressurised fuel is sprayed upstream of the valve seat
The petrol injectors are controlled separately in the order of injection (1 - 3 - 2), just before the intake phase (sequential injection)
Electrical features
| designation | minimum tolerance | nominal value | maximum tolerance |
|---|---|---|---|
| resistance | - | 12 ohms | - |
| voltage | - | 13,5 Volts | - |
| fuel supply pressure | 2,5 bar | 3,5 bars | 4 bar |
| petrol injector flow continuously open | 10,8 g/min | 13,5 g/min | 16,2 g/min |
| petrol injector flow under control | 4,41 mg/stroke | 4,5 mg/stroke | 4,59 mg/stroke |
| minimum injection time | - | 1,25 ms | - |
| number of channels | allocation of channels of connector |
|---|---|
| 1 | control of the petrol injector |
| 2 | supply of the coil 12 V |
Programming/initialisation
Programming is necessary if the component is replaced