Fuel Pressure and Engine Output

Presenter Information

Nicholas Bottoms, Minnesota State University, Mankato

Location

CSU 203

Start Date

11-4-2017 2:10 PM

End Date

11-4-2017 3:20 PM

Student's Major

Automotive and Manufacturing Engineering Technology

Student's College

Science, Engineering and Technology

Mentor's Name

Garu ,ead

Mentor's Department

Automotive and Manufacturing Engineering Technology

Mentor's College

Science, Engineering and Technology

Description

Fuel atomization is an important factor to having an efficient engine. Atomization is defined by how small the droplets of fuel are in the mist that an engine uses to produce a combustion event. The higher the injection pressure, the better the fuel will be atomized. The fuel spray will however will have greater penetration into the air stream in the intake. Over penetration must be avoided as it will induce wall wetting on the intake manifold. Wall wetting will create puddles of fuel that cannot be efficiently burned in an engine. Too low of pressure will not atomize the fuel properly. Poor atomization will reduce the efficiency of a combustion burn. Doing a proper fuel pressure sweep to find the best pressure and penetration combination is critical for an efficient engine. A fuel pressure sweep consists of starting at a low fuel pressure and measuring engine efficiency and slowly increasing in while monitoring efficiency. The ideal fuel pressure will then be visible from resulting data.