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).

Siemens OEM M54B30

Minimum injection time: 0.725ms

ip_ti_add_dly__vb

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 0280158123 627cc/min

Bosch 0280158123 Injector

Minimum injection time: 0.499ms

ip_ti_add_dly__vb

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

Porsche 997 twinturbo values @ 3.8bar

V	ms
7.01	2.94
10.05	1.41
12.04	1.00
14.02	0.65
16.00	0.57

Bosch 0280155968 440cc/min 42lb/hr "Green giants"

Minimum injection time: 0.468ms

ip_ti_add_dly__vb

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