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Fuel Injector Deadtimes
Every fuel injector type has a unique minimum injection time and latency for it to fully open since energized.
This latency is often referenced as injector lag- or deadtime, latency or delay (ip_ti_add_dly__vb).
It is strongly dependant on the supply voltage and therefore stored in an interpolated table.
The minimum injection time is also important to make sure the injection pattern is clear and complete. (c_ti_min_iv). Minimum injection time is calculated by subtracting the dead time at 14v from the minimum pulse width.
All values here are meant for the standard fuel pressure of 3.5 bars (50,76 psi), except otherwise defined.
ATTENTION: The conversion factor of the known XDF files are wrong. Correct conversion is "X * 0.032", giving a range of 0.00ms to 8.16ms.
BMW M52TU OEM injectors
Minimum injection time M52TUB20: 0.640ms
Minimum injection time M52TUB23/28: 0.624ms
V | ms |
---|---|
0.0 | 3.65 |
6.0 | 3.65 |
8.0 | 1.84 |
10.0 | 1.23 |
12.0 | 0.81 |
14.0 | 0.55 |
16.0 | 0.39 |
25.0 | 0.06 |
BMW M54B30 OEM injectors
Minimum injection time: 0.725ms
V | ms |
---|---|
0.0 | 4.44 |
6.0 | 4.44 |
8.0 | 1.88 |
10.0 | 1.15 |
12.0 | 0.77 |
14.0 | 0.51 |
16.0 | 0.34 |
25.0 | 0.04 |
Bosch 0280150945 320cc/min 30lb/hr
Minimum injection time: 0.496ms
V | ms |
---|---|
0.0 | 3.33 |
6.0 | 3.33 |
8.0 | 1.41 |
10.0 | 0.86 |
12.0 | 0.58 |
14.0 | 0.38 |
16.0 | 0.26 |
25.0 | 0.03 |
Bosch 0280155968 440cc/min 42lb/hr "Green giants"
Minimum injection time: 0.468ms
V | ms |
---|---|
0.0 | 4.986 |
6.0 | 4.986 |
8.0 | 2.098 |
10.0 | 1.321 |
12.0 | 0.919 |
14.0 | 0.670 |
16.0 | 0.47 |
25.0 | 0.47 |
(Same values apply to Bosch 280150558 green tops)
Bosch 0280158123 627cc/min
Minimum injection time: 0.448ms
V | ms |
---|---|
0.0 | 2.94 |
6.0 | 2.94 |
8.0 | 2.94 |
10.0 | 1.58 |
12.0 | 1.15 |
14.0 | 0.73 |
16.0 | 0.55 |
25.0 | 0.55 |
Siemens DEKA FI114961 (107961) 630cc/min
Minimum injection time: 0.981ms
V | ms |
---|---|
0.0 | 2.60 |
6.0 | 2.60 |
8.0 | 1.45 |
10.0 | 0.94 |
12.0 | 0.64 |
14.0 | 0.43 |
16.0 | 0.26 |
25.0 | 0.26 |
Siemens DEKA FI114991 (110324) 875cc/min
Minimum injection time: 0.202ms
V | ms |
---|---|
0.0 | 2.811 |
6.0 | 2.811 |
8.0 | 1.777 |
10.0 | 1.288 |
12.0 | 1.017 |
14.0 | 0.801 |
16.0 | 0.639 |
25.0 | 0.639 |