Bosch 4262056 – The Unit Injector With Matched Solenoid Response For Precise Injection Start Timing

In a unit injector, the injection timing is determined by the moment the solenoid is energised. The solenoid opens the spill valve, allowing the fuel to bypass the plunger, and the injection begins. If the solenoid response time changes - due to wear, temperature, or voltage variations - the injection timing shifts, and the combustion is affected. The 4262056 is a Bosch unit injector that is designed with a matched solenoid response - the solenoid is tested and matched to the injector body, ensuring that the response time is consistent. It is the injector that starts the injection at the same time, event after event, so the combustion timing is stable.

The unit injector is a pump and an injector in one - the plunger is driven by the camshaft, and the solenoid controls the start of injection. The solenoid is energised by the ECU, and it opens the spill valve, allowing the fuel to bypass the plunger. The time between the energisation and the opening of the spill valve is the solenoid response time. If the response time changes, the injection timing shifts, and the combustion is affected. The 4262056 addresses this with a matched solenoid response - the solenoid is tested and matched to the injector body, ensuring that the response time is consistent.

The 4262056 uses a solenoid that is tested and matched to the injector body. The solenoid is tested for its response time, and the injector body is tested for its hydraulic characteristics. The two are matched so that the response time is consistent.

Injector type: Unit injector

Solenoid resistance: 0.35 – 0.45 Ω

Solenoid response time: < 100 µs (from energisation to spill valve opening)

Operating voltage: 12 V DC

Maximum injection pressure: 1,800 bar

The most common failure is a slow solenoid response - the solenoid response time increases, and the injection timing is retarded. The symptom is a loss of power and an increase in smoke.

Q1: How can I tell if my solenoid response time has changed? → The engine loses power, and the exhaust produces more smoke.

Q2: Can I replace a single unit injector? → Yes, but the injector must be coded to the ECU.

Q3: Why does my engine have a loss of power and increased smoke? → The injection timing may be retarded due to a slow solenoid response.

Q4: What is the most common cause of injector failure? → A slow solenoid response - the solenoid response time increases.

Q5: Does the injector work with biodiesel? → Yes, but biodiesel can accelerate the wear rate.

Q6: What is the warranty on the injector? → The injector has a 12-month warranty.

 

To make your purchasing experience smooth and easy, we offer a variety of secure payment options:

We're here to make your order process worry-free - choose the payment method that works best for you!

 

 

Hot Tags: bosch 4262056 – the unit injector with matched solenoid response for precise injection start timing, China bosch 4262056 – the unit injector with matched solenoid response for precise injection start timing manufacturers, suppliers, factory, 0445020530, 1042300FE010, Bosch for Mercedes, Diesel Fuel Injection Pump 0445020050 ME225083, for Iveco Euro Cargo, High pressure fuel pump