Water Cooled, Single-Cylinder, Variable Compression Ratio Engine Test-Rig — MOE Lab Tender Details

Water Cooled, Single-Cylinder, Variable Compression Ratio Engine Test-Rig for Thermodynamics Lab Equipments

The experimental test-rig should have experimental capabilities like plotting of
torque and power curves, determination of various parameters such as volumetric
efficiency, mechanical and thermal efficiency, specific fuel consumption, frictional
power of engine under variable compression ratio at various fuel-air ratios, to draw heat
balance sheet, P-θ diagram, P-V diagram, pressure curve for gas cycle, determination of
indicated power output from P-V diagram, performance test under different load, speeds,
compression ratios etc.  
Specifications for Test Stand (Control and Load unit):   
• Computer Controlled, Control and Load Unit for Single Cylinder VCR (Variable
Compression Ratio) Engine with a maximum power output of 11 kW
• Test Stand with wheels for mobility withproper vibration control measures  
• Diagram in the front panel with similar distribution to the elements in the real unit  
• Asynchronous motor with regenerative feedback unit as the brake for generating
the engine load, and can be also used as starter motor.  
• Engine started by asynchronous motor  
• Force transmission from the engine to the brake unit by means of a coupling
(universal joint/leather pads). Proper attachment to adjust braking torque and brake
speed.   
• 2 separate fuel gauge systems.  
• Quietening vessel for intake air.  
• Potentiometer for adjustment of braking speed.  
• Sensors for measurement and display of Engine Load, Air Temperature, Air intake
Quantity, Speed, Fuel Consumption, Oil pressure, Exhaust Gas Temperature, Oil
Temperature and Cooling Water Temperature. Thermostat valve between radiator and engine whose temperature range (20- 170oC) can be varied to test effect of
cooling water temperature on engine performance.
The unit should be Computer Controlled i.e. commands for operation of unit should
be given from computer.   
Specifications for the Engine:   
• Water cooled type with variable compression ratio
• Power output (minimum)  : 7 kW at 3500 rpm
• Variable Compression ratio  :  5:1 to 20:1  
• Fuels supported by engine  : Petrol, CNG, LPG and Biogas  
• Adjustable Ignition Point  
• Creation of different compression ratio using a height adjustable cylinder.   
Electronic Engine Indicating System:   
• Cylinder pressure indication system for internal combustion engine  
• Chronological representation of pressure curve against the crank angle in P-θ
diagram to determine the maximum pressure and to monitor the ignition point and
the pressure increase.  
• Representation of pressure curve against the standardized piston capacity in P-V
diagram to determine the indicated power output.  
• System consists of measuring amplifier, TDC sensor and software for Windows XP,
Windows Vista or Windows7.