Venturi Type Carburation - Description; Zero Pressure Regulator; Carburation System Scheme - Kohler SFGLD480 Operation & Maintenance Manual

1. INTRODUCTION
A venturi-type carburation system comprises generically the following items:
- Zero Pressure Regulator (ZPR)
Main Adjustment Screw (MAS)
-
Carburettor (Mixer)
-
In the case of electronic regulation, for the NOX sensor control or Lambda sensor control regulation, the main
adjuxsting screw is changed by an electronic gas control valve.
In the case of electronic regulation, for the lambda close loop control regulation, the zero pressure regulator and
the main adjusting screw are changed by a gas inyecction valve.
2. ZERO PRESSURE REGULATOR (ZPR)
It is the pressure regulator's function to reduce the gas supply pressure to the carburettor inlet pressure. This type
of regulator is called "zero pressure regulator", because the regulator outlet pressure is zero or almost zero.
For the Zero Pressure Regulator setting, see document IT-G-A-30-001e
PRODUCT INFORMATION
IT-G-E-30-001e

VENTURI TYPE CARBURATION - DESCRIPTION

CARBURATION SYSTEM
Figure 1 Carburation system scheme
2.4.5
INDEX DATE
B
September 2015
O&M_2.002211.810_A_10_2016
Dep. 2
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