Installer's handbook - 1/3 Types of installation - 2/3 Software guide ...
Installer's handbook - 1/3 Types of installation - 2/3 Software guide ...
Installer's handbook - 1/3 Types of installation - 2/3 Software guide ...
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4.3 SEQUENT GENIUS.M<br />
REDUCER (CNG VERSION)<br />
In the CNG version the reducer,<br />
called SEQUENT GENIUS.M (picture<br />
7), consists <strong>of</strong> two reduction<br />
stages, which have the following<br />
operations:<br />
- to face every CNG pressure<br />
level coming from the tank (load<br />
pressure around 22 MPa corresponding<br />
to 220 bar),<br />
- to spread the CNG at the intermediate<br />
pressure, <strong>of</strong> 500 - 600 kPa<br />
(5 - 6 bar) in a first stage,<br />
- to bring the heat necessary to<br />
avoid an excessive cooling <strong>of</strong> fuel<br />
due to a sudden expansion,<br />
- to spread the CNG further on<br />
at the requested pressure, <strong>of</strong> 200<br />
kPa (2 bar), useful to supply the<br />
injection system. Such a value <strong>of</strong><br />
outlet pressure is conditioned by<br />
the pressure signal <strong>of</strong> the air intake<br />
manifold: in practice, the differential<br />
pressure is kept constant between<br />
the CNG pipe at the outlet <strong>of</strong> the<br />
reducer and the air-intake manifold.<br />
As can be seen from picture 8,<br />
the second stage <strong>of</strong> the SEQUENT<br />
GENIUS.M CNG reducer is very<br />
similar to the first and only stage <strong>of</strong><br />
the SEQUENT GENIUS LPG reducer<br />
version.<br />
Despite the particular compact<br />
dimensions, the reducer guarantees<br />
high gas flows, in order to satisfy<br />
powers up to 140 kW (190CV).<br />
4.4 ZENITH REDUCER<br />
(CNG VERSION)<br />
This is the new reducer for CNG<br />
<strong>installation</strong> and for Sequent<br />
Fastness system only and has<br />
important innovation and improvement.<br />
The reducer consists <strong>of</strong> two<br />
reduction stages with the following<br />
aim:<br />
- to face every CNG pressure<br />
level coming from the tank (load<br />
pressure around 22 MPa corre-<br />
TEMPERATURE SENSOR<br />
FEEDBACK<br />
WATER<br />
GAS INLET<br />
2 ND STAGE<br />
1 ST STAGE<br />
sponding to 220 bar),<br />
- to spread the CNG at the intermediate<br />
pressure, <strong>of</strong> 500 - 600 kPa<br />
(5 - 6 bar) in a first stage,<br />
- to bring the heat necessary to<br />
avoid an excessive cooling <strong>of</strong> fuel<br />
due to a sudden expansion,<br />
15<br />
Picture 07<br />
Sequent M.<br />
Genius Reducer<br />
Picture 08<br />
Sequent M. Genius<br />
Reducer - Sectional<br />
view -<br />
Picture 09<br />
Temperature sensor<br />
- to spread the CNG further on<br />
at the requested pressure, <strong>of</strong> 200<br />
kPa (2 bar), useful to supply the<br />
injection system. Such a value <strong>of</strong><br />
outlet pressure is conditioned by<br />
the pressure signal <strong>of</strong> the air intake<br />
manifold: in practice, the differential
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