analysis of a turbocharged diesel engine progress report 2 11/5/09 jenelle pope

Analysis of a Turbocharged Diesel Engine

Progress Report 2

11/5/09

Jenelle Pope

Background

Project Steps

• Installation Check Out• Compressor – air flow rate• Radiator – sizing of heat exchanger• Intercooler – sizing• Selection of components• Next Steps

– Instrumentation Locations– Power Increase – based on airflow– Heat Exchanger Area

Turbocharger installed in engine

• Turbocharger fits where the old one did

• Brackets and oil lines fit• Turbocharger runs with engine

Turbo Compressor

• Airflow out of the compressor, mass flow• CFM = airflow rate• CID = cubic inch displacement = 395• RPM = revolutions per minute = 2000• VE = volumetric efficiency = 80%

• Correcting for a boost pressure of 18psi:

9.1823456

**

VERPMCIDCFM

CFM8.406

Radiator Calculations

• Owner define– Cost– Size (dimensions)

• Surface Area, U• Overall heat transfer, U

kWq

TTCmttCm

qq

wpwapa

wa

135

1221

Intercooler Calculations

• Same as radiator• Different flow rates and temps

Heat Exchanger Selections

• Unknown value for U• Unknown value for A• Discussion with manufacturer• Feasibility:

– Cost– Size (dimensions)

Intercooler Radiator

Next Steps

• Instrumentation Locations– Inlets/outlets of heat exchangers

• Increased Engine Power– Based on airflow

• Validate Heat Exchanger Selections– Includes estimate on fin area based on actual

measurements– Fit checks– Tube routing