What is the maximum fuel pressure of GDI system?

Current gasoline injectors are already operating at a pressure of up to 35 MPa and an elevation is still promising lower particle emissions and increased efficiency. There have been only few studies of GDI sprays at pressures >50 MPa published. Contrary, in diesel engines injection pressure up to 250 MPa are common.

What PSI should my fuel pressure be?

Because, the average fuel pressure, can be anywhere from 45 psi to 55 psi. To be sure, consult with your vehicle owner’s manual; for the proper fuel-pressure range, before performing this test.

What pressure do fuel injectors run?

43.5 psi
The Effect of Fuel Pressure on Injector Flow Rate Most injectors are flow rated at 43.5 psi. (Motorcraft rates their injectors at 39.15 psi.)

Is GDI engine good?

GDI engines provide many benefits that conventional fuel injection can’t. With gasoline direct injection technology, you can draw more power from smaller engines. In addition, your car gets improved fuel efficiency and reduced emissions. While great, the power of the GDI engine is a double-edged sword.

What does GDI mean on Kia?

Gasoline Direct Injection
Kia’s Gasoline Direct Injection (GDI) engine is more powerful and efficient than its leading competitors. This engine makes Kia vehicle’s unbelievable performance and fuel efficiency possible.

What should fuel pressure be at idle?

Idling you’ll be at approximately 15 ~ 20 inches of vacuum which means fuel pressure must drop by 15 ~ 20 PSI to maintain the correct pressure drop across your injectors. In other words 39 PSI base + 20 inches of vacuum at idle = 19 PSI fuel pressure at idle.

How long should a fuel system hold pressure?

The basic leak-down test For the specification we must consult service-data, but the system should hold some pressure for about five-minutes.

How much pressure should be on a return fuel line?

The return syle regulator normally holds the pressure in the feed line and the fuel rails at or near the set pressure… around 40 PSI in an EFI system, though it could be higher or lower depending upon the application.

What’s GDI engine and how powerful it is?

The 1,6L GDI four-cylinder engine produces 138 horsepower and is available in Kia Rio 5-door hatchback and 4-door sedan, as well as under the hood of new Kia Soul crossover vehicle. The more potent 1,6L T-GDI turbo engine generates 201 horsepower and 195 lb.-ft. @ 1750-4500 rpm.

What are the advantages of a GDI engine?

Some of the benefits of a GDI motor are improved fuel economy and high power yield. Emissions levels can likewise be more precisely controlled within the GDI framework. Benefits of GDI engines include exact control over the measure of fuel and injection timing that can be varied depending upon engine load.

What is the fuel pressure specs?

Most OE systems maintain a fuel pressure of between 36 and 43.5 psi over the intake manifold pressure. Fuel pressure can be raised to increase the rate of fuel flow but this should not exceed 60 psi in most cases. It takes 4 times the fuel pressure to double fuel flow.

What is the maximum gas pressure in a gasoline engine?

The value of the maximum pressure depends on the type of the engine, what fuel it’s used. For a typical passenger vehicle engine, the maximum cylinder pressure can be around 120 bar (gasoline) or 180 bar (diesel). The power stroke starts when the piston moves from TDC towards BDC.