Installation
40
3.8 Gas Supply System
The installation of the gas supplying system must comply with the following requirements:
The typical gas supplying system arranged as :
For the gas pressure after pressure regulator, the value should be in the range of
3~5kPa.
3.8.1 Gas line
The lines installed before the gas pressure regulator should be the tough line, also the
flange or the threaded line can be used to connect.
Hoses can only be used after the gas pressure regulator, the inner diameter should be
≥
40mm.The length of this hose should be
≤
1m.
The dust inside the lines should be purged out with compressed air before installing. The
line and hose can't be scratched or crushed.
Minimize the number of connection points on the high pressure pipeline and guarantee
the easy-to-check construction, proper sealing, and high reliability.
The gas source shall be provided with an upstream protection device to cut off the gas
when the engine is stopped or gas is leaking.
Test connection points with leakage detecting liquid under the rated gas working
pressure, and no bubble detected within 1 minute. Alternatively, check with a gas
detector with at least 25ppm measurement accuracy.
3.8.2 Gas filter
The proper working temperature range for this filter is -15
℃～
60
℃
.
The gas inlet pressure of the filter should not exceed the specification.
The inspection, cleaning, and replacement of the filter should be easy to do after
installing.
Refer to the mark on the filter to ensure right installing position.
3.8.3 Gas pressure regulator
The proper working temperature for the regulator is -15
℃～
60
℃
.
The distance from the regulator to the engine should be
≤
2m.
The regulator vibration level should be lowest.
The regulator should be installed after the filter.
The regulator should be installed properly to avoid to be polluted by the dust during
using.
Gas source
Gas filter
Gas pressure regulator
Gas shut off valve
Gas/air mixer
Engine intake pipe
