Engine Control Unit (ECU)

ECU - Block DiagramEngine Control Unit (ECU)

Generator Block Diagram - Multi-Fuel Microprocessor Closed-Loop Feedback-Controlled System

Why is Engine Control Unit (ECU) necessary for Natural Gas / LPG / Biogas power generator?

It provides variable ignition timing to match different types of gaseous fuels. Our ECU is designed to adjust the precise ignition timing of sparks to provide the best power and fuel economy. It dynamically adjusts the ignition timing to control engine speed when sudden load is added on the generator.

Maintain proper air / fuel ratio to:

  • Ensure complete combustion.
  • Deliver maximum power output.
  • Minimize emission.
  • Reduce vibration.
  • Lower engine temperature.
  • Prolong engine life.

Problems with Conventional Single Cylinder Engines

Conventional Single Cylinder Engine is equipped with fixed ignition timing mechanism for operation on petrol. Converting conventional fixed ignition timing single cylinder engine to run on Natural Gas / LPG / Biogas generators without ECU may cause:

  • Bad fuel economy.
  • Slow RPM.
  • Power loss, hard startup, overheated engine.
  • Unstable engine speed and electricity frequency.
 

Air / Fuel Mixture and Elevation

Even with suitable carburetor jetting on a conventional engine, horsepower will decrease approximately 3.5% for each 1,000 feet increase in altitude. The effect of altitude on horsepower will intensify if no carburetor modification is made. If a generator jetted for a high altitude is used at a lower altitude, the lean air / fuel mixture will impact upon performance and may cause overheat and seriously damage the engine.

With Jensen Power MP5500/ 6500 generator, you do not have to worry about elevation. Our ECU does all mixture adjustments automatically regardless of elevation and temperature.

Elevation
in Feet

Power Loss

Power Generator
Output in kw

0

--

2500

5000

6500

1000

3.50%

2413

4825

6273

2000

7.00%

2325

4650

6045

3000

10.50%

2238

4475

5818

4000

14.00%

2150

4300

5590

5000

17.50%

2063

4125

5363

6000

21.00%

1975

3950

5135

7000

24.50%

1888

3775

4908

8000

28.00%

1800

3600

4680

9000

31.50%

1713

3425

4453

10000

35.00%

1625

3250

4225

 
© 2009 Jensen Power Equipment Limited. Member of Green Energy Group Limited.