PRODUCT INFORMATION
INDEX
DATE
Dep. 2
IT-G-E-30-001e B
September 2015
VENTURI TYPE CARBURATION - DESCRIPTION
5/5
With a venturi type carburettor, the gas pressure need not be greater than the atmospheric pressure. Accordingly,
the system includes a zero pressure regulator upstream of the carburettor. Since air and gas pressures are
identical, a constant air-gas ratio is obtained throughout the operating range of the engine.
Using this type of carburation permits easy adjustment of the proper air-fuel mixture to ensure optimum operation
of the engine under conditions of maximum efficiency or minimum exhaust emissions.
Figure 7 Air-Gas mixteure by venturi effect
For a manual carburation setting procedure using a mechanical carburation (Main Adjusting Screw), refer to
document IT-G-A-30-001e.
5. ELECTRONIC CONTROL
An electronically controlled valve uses a valve as shown in 3.2 and 3.3 paragraphs.
See the product information for carburation electronic control:
- IC-G-D-50-003 for EGS 02 system
- IC-G-D-50-004 for GCS system
- IC-G-D-50-005 for E3. DESCRIPCIÓN system
GAS
AIR
2.4.9
O&M_2.002211.810_A_10_2016
