Power at your Fingertips
Closed-Loop Engine vs. Open-Loop Engine
Closed-Loop Engine
Controllable air / fuel mixture and ignition timing to produce maximum power output and least emission.
Ignition timing varies according to engine load and fuel type which can be dynamically controlled by the microprocessor.
Our MightyPower series generators are equipped with closed-loop engines.
Open-Loop Engine
The engine is unmanaged. Air / fuel mixture and ignition timing are not consistent to produce maximum power output. It requires regular maintenance to reduce emission. Ignition timing in most single cylinder engines is fixed for operation on petrol which is too retarded for gaseous fuels. Incorrect ignition timing causes power loss and more emissions.
Most single cylinder generators use open-loop engines.
O2 Sensor
The O2 Sensor is an essential component to form a closed-loop system to maintain the best stoichiometric ratio regardless of temperature and elevation. If our ECU detects the air / fuel mixture is too rich or too lean, it will manage the mixture and ignition timing to deliver peak performance and fuel economy.
Fuel |
By Weight |
By |
Fuel by weight |
Natural Gas |
17.2 : 1 |
9.7 : 1 |
5.80% |
Propane (LPG) |
15.5 : 1 |
23.9 : 1 |
6.45% |
Petrol |
14.7 : 1 |
- |
6.80% |
Ethanol |
9.0 : 1 |
- |
11.10% |
Methanol |
6.4 : 1 |
- |
15.60% |
Diesel |
14.6 : 1 |
- |
6.80% |
