Functionalities; Speed Control; Load Control; Control Of Carburation At Different Loads - Kohler SFGLD480 Operation & Maintenance Manual

2. FUNCTIONALITIES

2.1 SPEED CONTROL

EGS02 can ensure the engine runs at constant speed regardless of its load. Speed can be pre-programmed in
the controller memory or changed externally by means of an analogue signal or through communications.

2.2 LOAD CONTROL

Where EGS02 does not control speed, e.g. when the engine is synchronised with the grid, it can control power
according to the required output, by means of an analogue signal or through communications.

2.3 CONTROL OF CARBURATION AT DIFFERENT LOADS

EGS02 can control the required air/gas ratio from tables that depend on power and speed. For this purpose, EGS
measures the gas flow as provided by the Tecjet and the mixture volume. This enables controlling emissions
according to load.
2.4 CONTROL OF CARBURATION FOR VARIATIONS OF GAS QUALITY
EGS02 will control carburetion, and subsequently emissions, when gas quality variations do not exceed ±10%.
Where gas quality is expected to change by more than 10%, it is possible to feed EGS02 with the gas CH4
percentage to enable EGS to make the appropriate corrections.
2.5 COMMUNICATONS-BASED SYSTEM MANAGEMENT
For easier monitoring and control, EGS02 features CanOpen communications that allow operators to read the
controller's data and to enter all kinds of settings. For further information about CanOpen communications, please
refer to: IT-G-A-50-010e "Description of EGS02 CanOpen Communications".
2.6 ENGINE PROTECTIONS
EGS02 provides a number of alarms to protect the engine against mechanical failures:
- Overspeed detection. It is possible to program the maximum speed limit that the engine may not exceed.
- Sensor faults: the controller can detect failing sensors in order to prevent damage to the engine.
- Misfire detection Detecting engine running instability can help detect misfire events. The following are possible
causes of engine speed inconsistency that can cause misfire events:
 Failure of ignition parts (module, coil, high voltage wire, spark plug)
 Carburetion faults
 Mechanical breakdowns
PRODUCT INFORMATION
IC-G-D-50-003e
EGS 02. DESCRIPTION
2.4.2
INDEX DATE
January 2010
O&M_2.002211.810_A_10_2016
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