Product Description
Multec 3.5 Fuel Injector Application Manual
3-26
Delphi Energy and Chassis Systems
Revision: 11/05-1
Figure 3-12 - Sample Single and Dual Spray Injector Patternator Results
Spray Plot
Spray Parameters
Injector Height : 143 mm
Test Description
Connector Angle (
θ
) : 0°
Test EWO # :
Fuel Pressure : 400 kPa
Part # :
Pulse Width : 5 ms
Serial # :
# of Pulses : 369
Fuel Type : N-HEPTANE
Captured Volume : 8.2 ml
Part Descriptor :
Centroid Location (x,y) : (0.9 mm, 1.3 mm)
Centroid Location (r,
θ
) : (1.6 mm, 55.4°)
Bend (Skew) Angle (
β
): 0.6°
Mass % vs. Cone Angle
Cone Angle
7.8
8.7
Spray Plot
9.8
11.1
12.4
0.0
to
6.3
6.3
to
12.5
12.5
to
18.8
18.8
to
25.0
25.0
to
31.3
31.3
to
37.5
37.5
to
43.8
43.8
to
50.0
50.0
to
56.3
56.3
to
62.5
62.5
to
68.8
68.8
to
75.0
75.0
to
81.3
81.3
to
87.5
87.5
to
93.8
93.8
to
100.0
w/ Centroids & 90% Analysis Circle
w/ Transducer Grid
70.0
M3.5 Single Spray
96.0
(% Transducer Volume)
Mass%
60.0
80.0
90.0
Mass % vs. Cone Angle
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
60.0
65.0
70.0
75.0
80.0
85.0
90.0
95.0
100.0
Mass %
Cone Angl
e (
deg)
Single Spray
Spray Parameters
Spray Plot
Injector Height : 100 mm (SLANT)
Connector Angle (
θ
) : 0°
Test Description
Fuel Pressure : 380 kPa
Test EWO # :
Pulse Width : 5 ms
Part # :
# of Pulses : 835
Serial # :
Captured Volume : 15.4 ml
Fuel Type : N-HEPTANE
Cone Angle 1 (
α
1) : 15.5° @ 90%
Part Descriptor :
Cone Angle 2 (
α
2) : 15.0° @ 90%
Separation Angle (
γ)
: 26.6°
Volume Split (St. 1 / St. 2) : 48.0% / 52.0%
Centroid Location 1 (x,y) : (-1.7 mm, 25.5 mm)
Centroid Location 1 (r,
θ
) : (25.6 mm, 93.9°)
Centroid Location 2 (x,y) : (-0.8 mm, -23.0 mm)
Centroid Location 2 (r,
θ
) : (23.0 mm, 267.9°)
α
1
10.6
11.9
Spray Plot
13.4
15.5
17.6
0.0
to
6.3
6.3
to
12.5
12.5
to
18.8
18.8
to
25.0
25.0
to
31.3
31.3
to
37.5
37.5
to
43.8
43.8
to
50.0
50.0
to
56.3
56.3
to
62.5
62.5
to
68.8
68.8
to
75.0
75.0
to
81.3
81.3
to
87.5
87.5
to
93.8
93.8
to
100.0
16.6
90.0
96.0
Cone Angle (
α
) vs. Mass %
w/ Centroids & 90% Analysis Circles
w/ Transducer Grid
70.0
α
2
M3.5 Dual Spray
% Transducer Volume
Mass %
60.0
80.0
10.4
11.6
13.1
15.0
Cone Angle (
α
) vs. Mass %
0.0
5.0
10.0
15.0
20.0
60.0
65.0
70.0
75.0
80.0
85.0
90.0
95.0
100.0
Mass %
α
(de
g
)
Stream 1
Stream 2
