Delphi Multec 3.5, Руководство по применению, Страница: 157 / 178

Multec 3.5 Fuel Injector Application Manual Appendix
Delphi Energy and Chassis Systems Revision: 11/05-1 10-3
12 For 2 intake valves per cylinder
applications and dual spray injectors:
Injector and or retention clip to have
rotational orientation feature to fuel rail
−
Describe recommended feature
3.3.5
13 % Fuel on intake valve (by design layout)
−
Requires interactive process between
injector targeting and spray geometry (% of
total fuel pulse mass)
3.8.1
3.8.2
14 Spray atomization requirements (droplet
size distribution – SMD, DV90)
3.8.3
Engine Fueling Requirements
15 System fuel pressure 2.3.4,8.4.1
16 Idle fuel mg/inj. pulse per injector
−
Include impact of canister purge if active
2.4.3
3.7
5.2.2.3
5.2.2.5
17 Max. SF rate at RPM, A/F ratio, inlet air
temperature (add formula for computing
when data not available) (g/sec per
injector)
3.7
18 Min. A/F ratio for converter protection 5.2.3.9
19 Max. cold crank, cold ambient fuel rate
(g/sec per injector)
3.7
5.2.3.13
20
Verify injector minimum controllable fuel
per pulse and tolerance sufficient for
transient fuel control (DFCO, DE, fuel trim
pulse, etc.)
−
Emissions and driveability
assessment
3.9.1
5.2.2.5
8.4.6
21 Hot idle RPM Automatic/Neutral/Manual 3.7
22 Injector fuel pressure biased to MAP, yes
or no
2.3.4
3.7
5.2.3.2
23 MAP at idle and WOT (100 kPa barometric
pressure (kPa)
2.3.4
3.7
24 Pressure drop across injector: idle and max.
SF rate (kPa)
3.7
4.2.4