Delphi Multec 3.5, Руководство по применению

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Product Description Multec 3.5 Fuel Injector Application Manual
3-36 Delphi Energy and Chassis Systems
Revision: 11/05-1
of rails to exceed the limit. See Figure 3-19 for a sample rail tip leak
Monte Carlo distribution.
Figure 3-19 Fuel Rail Total Tip Leak Monte Carlo Simulation Example (4 cylinder)
3.12
Contamination Resistance
See Section 7.3.4 The injector fuel inlet filter protects the fuel injector from initial build
fuel contamination as well as from fuel system assembly contamination.
Filtration is extremely important because particle contaminants can cause
an injector to stick open, flow shift or tip leak.
The injector inlet filter mesh size is 30 microns. Smaller filter mesh sizes
can lead to a higher likelihood of premature vaporization of highly volatile
fuels under high temperature conditions.
The injector inlet filter is not a serviceable component and is designed
only to trap potential built-in contamination between the chassis fuel filter
and injector. A chassis fuel filter with a 10 micron rating is required to
protect the injector from long term contamination damage.
3.13
Dynamic and Static Fuel Flow Specifications
For injector model specification on engineering drawings and in the
manufacturing process, flow is specified at two calibration points:
dynamic and static.
Injector Tip Leak Monte Carlo for 4 Cylinder Rail
5000 Rail Build Simulations
0.0% 0.2%
0.5%
0.9%
2.2%
3.5%
4.4%
7.0%
11.0%
25.2%
45.1%
65.7%
79.3%
89.5%
97.0% 98.7%
99.1% 99.3% 99.5% 99.9%
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0.0 -
0.1
0.1 -
0.2
0.2 -
0.3
0.3 -
0.4
0.4 -
0.5
0.5 -
0.6
0.6 -
0.7
0.7 -
0.8
0.8 -
0.9
0.9 -
1.0
1.0 -
1.1
1.1 -
1.2
1.2 -
1.3
1.3 -
1.4
1.4 -
1.5
1.5 -
1.6
1.6 -
1.7
1.7 -
1.8
1.8 -
1.9
1.9 -
2.0
Total Injector Tip Leak (cc/min)
Cumulati
ve %
1.6 allowable total
injector tip leak