Throttle Control - National Instruments NI 9759 User Manual

Table 1. Connection Table Specific for Standard Bosch DV-E5 Electronic Throttle Bodies
DV-E5 Pin
1
2
3 Potentiometer Reference
4
5 Potentiometer 2 Signal
6 Potentiometer 1 Signal
Throttle Body Diameter (mm)
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Throttle Control

NI provides a flexible throttle position control algorithm with the NI 9759. Follow the throttle
control example included in the driver package for implementing throttle control in your engine
control application. Perform throttle control at a rate of 100 to 200 Hz, even if your engine
control algorithms require execution at another rate, a separate timed loop can be created to
implement throttle control. The throttle control VI uses position values in terms of degrees, but
percentages can be used instead.
The throttle control algorithm calculates a final voltage to be applied to the throttle body DC
motor. The final voltage is applied by means of a PWM duty cycle, with battery voltage being
the maximum possible voltage. The control voltage may be compensated for actual battery
voltage, if it deviates from the nominal battery voltage, according to BattCompEnable. The
compensated voltage is converted to a signed PWM duty cycle at a fixed frequency of 500 Hz.
The throttle control VI output results are in terms of 40 MHz clock ticks to be wired to the FPGA
period and pulse width parameters.
Description
Motor -
Potentiometer Ground
Motor +
Table 2. Standard Bosch DV-E5 Throttle Bodies
32
40
54
60
68
and enter Info Code
Module Terminal
(Throttle1/Throttle2)
T2/T4
T8
T5
T1/T3
T6/T7
T6/T7
Bosch Part Number
for more information about parts and
THROTTLE
NI 9759 User Manual | © National Instruments | 7
Description
H1A/H2A
GND
5V Out
H1B/H2B
AN1/AN2
AN1/AN2
0 280 750 148
0 280 750 149
0 280 750 150
0 280 750 151
0 280 750 152