PRODUCT INFORMATION
INDEX
DATE
Dep. 2
IC-G-D-30-040e
A
September 2016
SPECIFICATION OF GAS SUPPLY TO TECJET 52
1/3
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.
0
50
100
150
200
250
300
0
100
200
300
400
500
600
700
800
900
1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200
T
J52
Inlet
P
res
sure
(m
ba
r)
Engine Power (KW)
MINIMUM PRESSURE TJ52 vs MAXIMUM POWER
(Gas Temperature 25ºC / 40ºC)
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)
Minimum Pressure 50 mbar
2
3
4
5
6
1
Maximum Pressure 275 mbar
40ºC
40ºC
40ºC
40ºC
40ºC
25ºC
25ºC
25ºC
25ºC
25ºC
25ºC
40ºC
Fig. 1 - Minimum pressure at Tecjet52 vs Maximum Power
2.4.11
O&M_2.002211.810_A_10_2016
