Kia Niro: Engine Control System / Injector Description and operation
| Description |
The GDI injector is similar to a standard injector, but sprays fuel at a much higher pressure directly into the combustion chamber and has a swirl disc to get the fuel swirling as it exits the nozzle. This aids in atomization of the fuel.
The ECM controls both the feed circuits (high side) to feed voltage to the injectors and the ground circuits (low side) to energize the injectors. Also, the feed for 2 injectors comes from the same driver set. As the ignition coils are paired with cylinders (1-4 and 2-3), the injectors are also set up in pairs.
Injector Specifications
Specification
Item
Specification
Coil Resistance (Ω)
1.425 - 1.575 [20°C(68°F)]
...
Injector Schematic diagrams
Circuit Diagram
Harness Connector
...
Other information:
Kia Niro 2017 (DE HEV) Service Manual: Knock Sensor (KS) Repair procedures
Removal
1.
Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
2.
Remove the intake manifold. (Refer to Engine Mechanical System - “Intanke
Manifold”)
3.
Remove the installat ...
Kia Niro 2017 (DE HEV) Service Manual: Description and operation
Description
The Hybrid Power Control Unit (HPCU) uses various semiconductors that are supplied
with high voltage, hence generating more heat than engine combustion devices. Overheating
can decrease the efficiency of control devices, restrict proper operation and melt
semiconductor ...
