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CONTROL SYSTEM
TNV Application Manual
2-35
Control map
As already mentioned in "Control software", the E-ECU software can be divided into the control program,
engine model-specific control map and individual data. This section describes the engine model-specific
control map.
Map data can be categorized into the following types:
1. Flag type: Conditionally branched based on 0, 1, 2, ...
Ex. : ON-glow control flag
0: Enables control.
1: Disables control.
2. Numeric type: Numerics are used for control.
Ex. : Alternator-pulley ratio
169: It is assumed that the alternator speed is 1.69 times the engine speed.
3. 1D type: Used to set a value in x coordinate.
(a) in the figure below).
4. 2D type: Used to set values in x and y coordinates.
(b) in the figure below).
Figure 2-23
1D/2D map and interpolation
1D and 2D maps are treated as follows:
• Values between map coordinate axes are linear interpolated.
• When there are values outside map coordinate axes, the outermost value is held. (Extrapolation)
• Decimal places are truncated.
• The number of map coordinate axes is limited to a predetermined value.
X:
S
peed (6 point
s
)
V
a
l
u
e: R
a
ck po
s
ition
(
a
) 1D m
a
p ex
a
mple
X:
S
peed (4 point)
Y: Lo
a
d f
a
ctor (4 point
s
)
(
b
) 2D m
a
p ex
a
mple
0
50
45
40
3
5
20
5
10
25
3
0
3
5
15
20
V
a
l
u
e: EGR opening
Line
a
r interpol
a
tion
Extr
a
pol
a
tion
Extr
a
pol
a
tion
Line
a
r interpol
a
tion
Extr
a
pol
a
tion
Extr
a
pol
a
tion
0
0
0
00_Electronic_Control_System.book 35 ページ 2006年5月29日 月曜日 午後2時12分
Summary of Contents for Yanmar 3TNV82A-B
Page 95: ...CONTROL SYSTEM 2 76 TNV Application Manual 00_Electronic_Control_System book 76...
Page 96: ...Appendix Standard harness 1 00_ _E fm 1...
Page 97: ...Appendix Standard harness 2 00_ _E fm 2...
Page 98: ...TNV Series service tool Operation Manual...
Page 132: ...32 7 Main Menu Figure 7 15 Data Logging Data Monitor Screen...
Page 145: ...7 Main Menu 45 Figure 7 27 System Installation Configuration Screen...