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Fuel Injector Deadtimes: Difference between revisions
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'''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. | '''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 == | ==BMW M52TU OEM injectors== | ||
Siemens part number: A2C59511971 / 1427240 | Siemens part number: A2C59511971 / 1427240 | ||
Flow rate: 225cm³/min @ 3.5 bar | |||
'''Minimum injection time M52TUB20:''' 0.640ms | '''Minimum injection time M52TUB20:''' 0.640ms | ||
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== BMW M54B30 OEM injectors== | ==BMW M54B30 OEM injectors== | ||
Siemens part number: A2C59514053 / 1439800 | |||
Flow rate: 252cm³/min @ 3.5 bar | Flow rate: 252cm³/min @ 3.5 bar | ||
Revision as of 11:13, 7 May 2019
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
Siemens part number: A2C59511971 / 1427240
Flow rate: 225cm³/min @ 3.5 bar
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
Siemens part number: A2C59514053 / 1439800
Flow rate: 252cm³/min @ 3.5 bar
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/h "Red-tops"
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/h "Green giants"
39.15 PSI/270 kPa:
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 (Ford Part# M-9593-F302)
Bosch 0280158123 627cc/min 57lb/hr "Porsche 997tt"
43.5 PSI / 3bar
Minimum injection time: 0.448ms
t_ti_as_cyl: 0.458
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 6900371 440cc/min 42lb/hr "VOLVO Turbo"
Minimum injection time: 0.501ms
V | ms |
---|---|
0.0 | 4.44 |
6.0 | 4.44 |
8.0 | 1.88 |
10.0 | 1.15 |
12.0 | 0.94 |
14.0 | 0.85 |
16.0 | 0.77 |
25.0 | 0.04 |
Siemens DEKA FI114961 (107961) 630cc/min
39.15 PSI/270 kPa:
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 80lb/hr
39.15 PSI/270 kPa:
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 |