The 1KZTE engine, widely acclaimed for its reliable performance in many Toyota vehicles, owes its efficiency to a number of finely engineered components. Among them, the diesel fuel injector plays a key role. In this post, we’ll explore an interactive 3D model of the injector, breaking down its main components and their functions.

3D Model

Main Components

Nozzle Holder Retaining Nut

The journey through the 1KZTE injector begins with the nozzle holder retaining nut. This part secures the entire assembly together, providing the necessary stability for the injector to function under high pressure and temperature conditions.

Nozzle Body

Next, we encounter the nozzle body, which houses the nozzle needle. The nozzle body plays a vital role in managing the pattern and volume of the fuel spray entering the engine’s cylinder.

Nozzle Needle

Within the nozzle body lies the nozzle needle. This component, carefully designed and machined, controls the release of fuel into the engine, ensuring the right amount is delivered every time.

Distance Piece

Further into the injector, we find the distance piece, which creates the necessary gap between the nozzle body and the pressure pin. This small component ensures the accurate movement of the nozzle needle, contributing to the overall harmony of the injector system.

Pressure Pin

The pressure pin, in collaboration with the pressure spring, manages the release of fuel from the injector. It’s an essential component, working to ensure that the injector opens and closes at the correct time.

Pressure Spring

The pressure spring provides the necessary force for the pressure pin to return to its initial position after each fuel injection cycle. This simple component is vital for the precise operation of the injector.

Adjusting Shim

The adjusting shim is a thin metal piece that helps set the pressure at which the injector begins to release fuel into the engine. By adjusting this component, mechanics can optimize engine performance and fuel efficiency.

Nozzle Holder Body

Lastly, we have the nozzle holder body. This robust casing holds all the components together, ensuring the injector works as a cohesive unit to deliver optimal engine performance.