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**1. The problem**

DIESEL IC ENGINE

We were given a excel sheet, with RPM, Torque, Power, Bmep, Fuel mass flow rate, Airmass SFC, Engine Air inlet and Exhaust temp.

The engine capacity is 2.2litre 4 stroke.

Fuel specifications: 50 Cetane (0.05% Sulphur)

Coolant = Fresh water with 45% glycol mix.

I am having problems finding

VE=(mRT/P)/(Vswept)

VE=(9411*HP*BSFC)/(displacement*RPM)

I found a VE(volumetric efficiency) of 72.808% for the first speed of 1000RPM

with eq: VE=(9411*HP*BSFC)/(displacment*RPM)

=(9411*24.2*0.45)/(134*1000)

but seem to get the rest above 100% eg @2000RPM VE=133.856%

I have tried more than one equation, this seemed to get closer to the 70% VE it should be.

I also need to do a heat balance thus i require the calorific value of the diesel (it is not bio diesel fuel) as well as cp for the coolant.

Any assistance would be much appreciated.

DIESEL IC ENGINE

We were given a excel sheet, with RPM, Torque, Power, Bmep, Fuel mass flow rate, Airmass SFC, Engine Air inlet and Exhaust temp.

The engine capacity is 2.2litre 4 stroke.

Fuel specifications: 50 Cetane (0.05% Sulphur)

Coolant = Fresh water with 45% glycol mix.

I am having problems finding

**Volumetric Efficienc**y, the fuel**calorific value**and**coolant specific heat.**## Homework Equations

VE=(mRT/P)/(Vswept)

VE=(9411*HP*BSFC)/(displacement*RPM)

## The Attempt at a Solution

I found a VE(volumetric efficiency) of 72.808% for the first speed of 1000RPM

with eq: VE=(9411*HP*BSFC)/(displacment*RPM)

=(9411*24.2*0.45)/(134*1000)

but seem to get the rest above 100% eg @2000RPM VE=133.856%

I have tried more than one equation, this seemed to get closer to the 70% VE it should be.

I also need to do a heat balance thus i require the calorific value of the diesel (it is not bio diesel fuel) as well as cp for the coolant.

Any assistance would be much appreciated.

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