PD Injector Data: 3-Cylinder Engine Performance (Articles)

Target data for measurement blocks in 3-cylinder engines with pump-nozzle injectors (PD)

Engine codes: AMF (Lupo 3L, Audi A2 3L) and ANY (Audi A2 1.2 TDI). Engine at operating temperature (coolant temperature ≥ 80 °C). LL = idle, VL = full load, - = no specified value.


Measurement block 0 - Baseline values

Field	Description	AMF LL	AMF VL	ANY LL	ANY VL
1	Engine speed	41..47	134..154	26..42	134..154
2	Start of injection	117..97	79..56	126..116	76..56
3	Accelerator pedal position	0	255	0	255
4	Injection quantity	11..37	156..175	11..29	109..131
5	Intake manifold pressure	-	177..216	88..108	161..210
6	Atmospheric pressure	-	-	181..222	181..222
7	Coolant temperature	80..36	80..36	80..36	80..36
8	Intake manifold temperature	-	-	190..51	190..51
9	Fuel temperature	-	-	85..178	85..178
10	Intake air mass	60..96	> 210	54..87	> 180

Measurement block 1 - Baseline values at idle

Field	Description	AMF LL	ANY LL
1	Engine speed in RPM	900..980	800..880
2	Injection quantity in mg/stroke	3..10	3..8
3	Delivery duration in °crank angle	4..7	3..7
4	Coolant temperature in °C	80..110	80..110

Measurement block 2 - Operating state at idle

Field	Description	AMF LL	ANY LL
1	Engine speed in RPM	900..980	800..880
2	Accelerator pedal position in %	0	0
3	Operating state	010	010
4	Coolant temperature in °C	80..110	80..110

Measurement block 3 - Air masses / EGR at idle

Field	Description	AMF LL	ANY LL
1	Engine speed in RPM	900..980	800..880
2	Air mass setpoint in mg/stroke	220..300	200..270
3	Actual air mass in mg/stroke	200..320	180..290
4	EGR valve duty cycle in %	30..80	30..80

Measurement block 4 - Delivery start / Synchronization

Field	Description	AMF LL	AMF VL	ANY LL	ANY VL
1	Engine speed in RPM	900..980	2800..3200	800..880	2800..3200
2	Delivery start setpoint in °BTDC	3..9	15..22	0..3	16..22
3	Delivery duration setpoint in °crank angle	4..7	17..24	4..6	15..23
4	Synchronization angle in °crank angle	-5..+5	-	-3..+3	-

Measurement block 5 - Starting conditions at idle

Field	Description	AMF LL	ANY LL
1	Engine speed in RPM	900..980	800..880
2	Starting quantity in mg/stroke	9..20	13..18
3	Start synchronization	1	1
4	Coolant temperature in °C	80..110	80..110

Measurement block 8 - Injection quantities at full load

Field	Description	AMF VL	ANY VL
1	Engine speed in RPM	2800..3200	2800..3200
2	Injection quantity, driver demand in mg/stroke	50..65	45..51
3	Torque limitation in mg/stroke	43..48	31..36
4	Smoke limitation in mg/stroke	46..55	29..40

Measurement block 10 - Full load boost pressure

Field	Description	AMF VL	ANY VL
1	Actual air mass in mg/stroke	> 700	> 600
2	Atmospheric pressure in mbar	-	900..1100
3	Intake manifold pressure in mbar	1800..2200	1650..2140
4	Accelerator pedal position in %	100	100

Measurement block 11 - Boost pressure control

Field	Description	AMF LL	AMF VL	ANY LL	ANY VL
1	Engine speed in RPM	900..980	2800..3200	800..880	2800..3200
2	Boost pressure setpoint in mbar	900..1100	1800..2100	900..1100	1650..2100
3	Actual boost pressure in mbar	900..1100	1800..2100	900..1100	1650..2140
4	Boost pressure valve duty cycle in %	25..95	40..95	25..95	40..95

Measurement block 13 - Smooth running control at idle

Field	Description	AMF LL	ANY LL
1	Smooth running regulator cylinder 1 in mg/stroke	-2,8..+2,8	-1,9..+ 1,9
2	Smooth running regulator cylinder 2 in mg/stroke	-2,8..+2,8	-1,9..+ 1,9
3	Smooth running regulator cylinder 3 in mg/stroke	-2,8..+2,8	-1,9..+ 1,9

Measurement block 18 - PD element status at idle

Field	Description	AMF LL	ANY LL
1	PD element 1 status	0	0
2	PD element 2 status	0	0
3	PD element 3 status	0	0

Source: community.dieselschrauber.org – Michael II