What is fuel injection rate shaping?
A fuel injection rate shaping control system is provided which effectively controls the flow rate of fuel injected into the combustion chamber of an engine to improve combustion and reduce emissions by controlling the rate of pressure increase during injection.
What is EDC in truck?
Electronic Diesel Control is a diesel engine fuel injection control system for the precise metering and delivery of fuel into the combustion chamber of modern diesel engines used in trucks and cars.
How is electronic control used in a diesel injection system?
Most fuel injection systems use electronics to control the opening and closing of the nozzle. Electrical signals are converted into mechanical forces using some type of actuator. Commonly, these actuators can be either electromagnetic solenoids or active materials such a piezoelectric ceramics.
What is post injection in diesel engines?
A post injection, which is a short injection after a longer main injection, is an in-cylinder tool to reduce engine-out soot to meet pollutant emissions standards while maintaining efficiency, and potentially to reduce or eliminate exhaust aftertreatment.
What is the injection timing of diesel engine?
Injection timing, also called spill timing, is the moment when diesel fuel enters the cylinder during the combustion phase. When you adjust the timing, you can alter when the engine injects the fuel, therefore changing when combustion occurs.
What is the injection pressure in a diesel engine?
In many cases, the injector is mounted just like a spark plug would be in a gas engine. But unlike fuel-injected gas engines that inject fuel at 10-60 psi, diesel fuel-injection systems run in the 10,000-30,000-psi range.
Do diesel engines have ECU?
Abstract: The dynamic, comfort and emission performances of vehicle directly dependent on the control of engine. Engine electronic control unit (ECU) receives the signals from the sensors, and gets the current engine status.
What are the advantages of using electronic control on diesel engine?
The passenger car equipped with the electronic control diesel engine mentioned above provides the following four additional advantages: (1) Good acceleration response; (2) Idle speed control which is affected by engine coolant temperature, on-off of the air conditioning compressor and battery voltage; (3) Cruise …
What are the 3 types of diesel?
What are the different types of diesel fuel?
- Petroleum diesel. Petroleum diesel, or fossil diesel, is the most common type of fuel, used in freight trucks, trains, buses and farm and construction vehicles.
- Synthetic diesel.
- Biodiesel.
- Hydrogenated oils and fats.
- Dimethyl ether (DME)
What does advancing timing do on a diesel?
Advancing the timing means that you are changing when the combustion process will take place in relation to the piston’s position. By advancing the injection timing, the combustion process will take place before the manufacturer initially intended it to. Doing this should increase horsepower.
How do I know if my injection timing is correct?
Turn the engine so that the unit to be checked is toward the TDC of compression stroke (plunger upstroke) so that hair line marking on plunger and pump body are coincided. When hair lines are coincided, stop turning and check the mark on the fly wheel whether timing is correct or not.
What happens when the fuel is injected too early?
Early injection timing leads to longer ignition delay which results in accumulation of large amount of evaporated fuel before the start of combustion. Longer ignition delay is due to lower values of pressure and temperature inside the cylinder during the initial period of fuel injection at advanced injection timings.
How much pressure does a diesel injector pump put out?
Fast-forward to the present day, and those diesel fuel injector pumps are operating in the 30,000 to 40,000 psi range. Top-end engine performance is in many ways dictated by how much fuel can be processed by the engine.
What is difference between ECU and ECM?
What is an ECM or ECU? ECM stands for engine control module, while ECU stands for engine control unit. While these two have a different name, the modules are essentially the same thing. These electronic modules control multiple systems of the vehicle, including the ABS, airbags, cruise control and air conditioning.
What are the advantages of electronic diesel control?
What is the disadvantage of electronic fuel injection?
Disadvantages of Electronic Fuel Injection System High maintenance cost. Difficulty in servicing. Possibility of malfunction of some sensors.
Why did they move to electronic fuel control?
As you know, gas-powered cars are polluting. The electronic fuel injection system was designed to optimize fuel consumption and reduce the amount of polluting particles emitted from the exhaust pipe.
Is synthetic oil better for diesel engines?
If you’re looking for the best oil for your diesel engine, you can’t go wrong with synthetic oil. Synthetic oil is designed to withstand extreme temperatures and conditions, making it ideal for use in diesel engines. It also provides superior protection against wear and tear, helping to extend the life of your engine.
What is the best grade of diesel fuel?
#2 grade diesel fuel is the most readily available at most gas stations throughout the world. This chemical compound holds the highest amount of energy components and lubricant properties in one mixture and offers the best fuel performance available on the market today.
What happens if timing is too advanced?
When this starts to happen at the wrong time, the combustion process is off. This causes your engine to use more fuel to compensate for reduced power. Overheating: If the air and fuel mixture is ignited too soon in the combustion process, the heat generated will increase. This can damage different parts of the engine.
What causes GREY smoke from a diesel engine?
Gray or black exhaust smoke in a diesel engine could be indicate several problems: Wrong grade of fuel used. Clogged air filter. Improper timing.
How do you know if your diesel engine is off timing?
How To Tell If Your Engine Timing Is Off – YouTube
What temperature does diesel burn at?
The temperature of the diesel needs to be heated up to 55 ̊C degrees by the match before the liquid starts burning. The tip of the burning match touching the liquid is about 1000 ̊C. It takes over a full minute before the diesel starts burning.
Can high fuel pressure damage injectors?
No permanent damage as long as the pressure doesn’t remain high for long. The valves must be fully closing. Even a few thousandths of separation between valve and seat would result in very little to no compression at all, the engine would spin freely when cranking and wouldn’t start.
On what pressure does a diesel injector open?
The present research is aimed to investigate experimentally the performance, exhaust emission, and combustion characteristics of a DI diesel engine, when fueled with neat diesel (ND) and HOME. The injector opening pressure (IOP) is varied from 200 bar (manufacturer specified value) to 260 bar in steps of 20 bar.