Specification Of Gas Supply To Tecjet 52; Gas Pressure Range; Minimum Pressure At Tecjet52 Vs Maximum Power - Kohler SFGLD480 Operation & Maintenance Manual

1. INTRODUCTION
This Product Information document applies to all the gas engines fitted with a Tecjet 52 valve

2. GAS PRESSURE RANGE

Correct operation of the Tecjet 52 control valve is directly related to the input gas pressure and the pressure
drop in the valve during normal running of the engine.
The input pressure to Tecjet 52 must be in the range from 50 to 275 mbar (as shown on the graph-Fig. 1).
For input gas pressure to Tecjet52 less than 50 mbar, consult Kohler. Accuracy
may be adversely affected
With the engine running, pressure drop in the Tecjet valve (delta-p) must be in the range 70-345 mbar.
Operation below this range is possible at start-up and idling, but on load, accuracy will be affected negatively. At
pressures greater than 275 mbar, accuracy decreases as well and the error tolerance increases by about 10%
in relation to the normal margin.
The graph below shows the minimum pressure requirements as measured at the inlet to the Tecjet 52 valve
related to engine power and gas quality under normal conditions.
MINIMUM PRESSURE TJ52 vs MAXIMUM POWER
300
Maximum Pressure 275 mbar
250
200
150
100
50
Minimum Pressure 50 mbar
0
0 100 200 300
PRODUCT INFORMATION
IC-G-D-30-040e

SPECIFICATION OF GAS SUPPLY TO TECJET 52

(Gas Temperature 25ºC / 40ºC)
40ºC 40ºC
25ºC
25ºC
40ºC
5
6
4
400 500 600 700 800 900
Fig. 1 - Minimum pressure at Tecjet52 vs Maximum Power
INDEX
A
40ºC
25ºC
25ºC
3
2
1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200
Engine Power (KW)
2.4.11
DATE
September 2016
O&M_2.002211.810_A_10_2016
.
1- Natural Gas (37,5 MJ/Nm3)
2- Mine Gas (27,5 MJ/Nm3)
3- Sewage Gas (22 MJ/Nm3)
4- Landfill Gas (18 MJ/Nm3)
5- Landfill Gas (14MJ/Nm3)
6- Syngas (10,1 MJ/Nm3)
40ºC
25ºC
40ºC
1
25ºC
Dep. 2
1/3