cara kerja bahan bakar diesel (Tipe common rail)

Summary

This video explains the workings of a common-rail fuel injection system. It covers the key components involved, including the intake manifold, turbocharger, fuel tanks, filters, pumps, injectors, and control valves, along with their functions in the fuel delivery process. The video also delves into the electronic control systems, sensors, and actuators that regulate fuel flow, air intake, and exhaust systems, ensuring optimal engine performance. Additionally, it discusses how different sensors, such as temperature and pressure sensors, communicate data to the ECU for precise engine management. Overall, the explanation provides a comprehensive overview of how the modern fuel injection system operates.

Takeaways

• 😀 The exhaust gas recirculation (EGR) system is responsible for sending unburnt gases back to the intake manifold for re-burning to reduce emissions.
• 😀 The turbocharger system helps to compress air before it enters the engine, increasing its efficiency by boosting the engine's power.
• 😀 The fuel system includes multiple components such as the fuel tank, fuel lines, filters, and a water sedimenter to ensure clean and efficient fuel delivery.
• 😀 Fuel is pumped under low pressure from the tank to the supply pump, then under high pressure by the distribution pump (bospom) to the common rail.
• 😀 The common rail pressure sensor (CRPS) measures the fuel pressure within the common rail and sends data to the ECU for proper fuel management.
• 😀 The injectors spray fuel into the combustion chamber according to the ECU’s instructions, controlling fuel delivery for optimal combustion.
• 😀 A fuel return system includes a pressure limiter to return excess fuel back to the tank, preventing overpressure in the system.
• 😀 Various sensors monitor the vehicle’s performance, including the air temperature sensor, water temperature sensor, and position sensors for key components like the crankshaft and camshaft.
• 😀 Actuators in the system, such as the throttle valve actuator and fuel injector actuator, are responsible for adjusting fuel flow and managing air intake.
• 😀 The ECU (Electronic Control Unit) uses input from multiple sensors to regulate engine performance, adjusting fuel injection, air intake, and exhaust systems accordingly.

Q & A

What is the main function of the intake manifold in a vehicle's fuel injection system?

The intake manifold directs the air-fuel mixture into the engine's combustion chamber, ensuring proper air-fuel distribution for combustion.

What role does the exhaust manifold play in the fuel injection system?

The exhaust manifold collects the exhaust gases from the engine cylinders and directs them towards the exhaust system, helping to expel the gases out of the vehicle.

How does the Exhaust Gas Recirculation (EGR) system contribute to the combustion process?

The EGR system recycles exhaust gases back into the intake manifold to re-burn gases that were not completely combusted, reducing emissions and improving fuel efficiency.

What is the function of the fuel filter and water sedimenter in the fuel delivery system?

The fuel filter removes impurities and dirt from the fuel, while the water sedimenter separates water from the fuel, ensuring clean fuel delivery to the engine.

Why is the fuel supply pump important in a vehicle's fuel system?

The fuel supply pump is responsible for moving fuel from the tank to the engine at the required pressure, ensuring that the engine receives an adequate fuel supply.

What does the Common Rail Pressure Sensor (CRPS) measure?

The CRPS measures the fuel pressure within the common rail and sends this data to the ECU, which adjusts fuel delivery to maintain optimal engine performance.

How does the injector function in the fuel injection system?

The injector sprays fuel into the combustion chamber in a precise manner, based on signals from the ECU, to ensure efficient combustion.

What is the purpose of the fuel pressure limiter in the system?

The fuel pressure limiter prevents the fuel pressure in the common rail from exceeding set limits, ensuring safe and efficient operation of the engine's fuel system.

How does the Accelerator Pedal Position Sensor (APPS) contribute to engine control?

The APPS detects the position of the accelerator pedal and sends data to the ECU, which adjusts fuel delivery based on the driver's input for proper engine response.

What role do actuators play in the electronic control system of a vehicle's fuel injection system?

Actuators control components like the throttle valve, turbocharger, and injectors based on ECU commands, helping to regulate fuel delivery, air intake, and turbo performance for optimal engine function.