Multec 3.5 Fuel Injector Application Manual
Validation Requirements
Delphi Energy and Chassis Systems
Revision: 11/05-1 9-5
9.3.4.3 Bending
Apply a bending moment of 6 N*m to the injector. Clamp the injector in a
collet or suitable fixture on the outside diameter in the vicinity of the
manifold seal ring and apply a load to the vicinity of the upper seal ring to
achieve 6 N*m for 30s. The seal rings may be removed for the purpose of
this test.
9.3.4.4 Torsion
Apply a torsional moment of 0.6 N*m to the injector. Fixture the outside
diameter in the vicinity of the manifold seal ring in a collet or suitable fixture
and apply a suitable load to the side of the connector to create a 0.6 N*m
torsional load for 5s. Support the fuel inlet of the injector to prevent
application of a bending moment.
9.3.4.5 Vibration
Multec 3.5 injectors will withstand accelerated vibration exposure in 3 axis
without loss of ability to comply with the durability flow tolerance
requirements as shown on the Injector Outline Drawing. The vibration
schedule, “Multec 3.5 Enhanced Generic Fuel Rail Schedule”, is based on
an average worst case accelerated schedule for 4, 6, and 8 cylinder
applications. The injector will be pressurized at normal operating pressure
with calibration test fluid during vibration. The injector will be actuated at
2.0 ms pulse width and 10.0 ms period during the vibration test. No
component degradation or physical damage is acceptable as a result of this
procedure. (See section 4.2.3 for vibration measurement level procedure.)
9.3.4.6 Shock
Multec 3.5 injectors will withstand shock exposure, without loss of the
ability to comply with the flow tolerance requirements as defined on the
Injector Outline Drawing when exposed to 50 g peak, half sine, 11 ms
duration shocks in three axis (6 times per axis) at ambient temperature of 25
±
2
°
C (77
±
3.6
°
F.)
9.3.5 Overpressurization
Multec 3.5 injectors will withstand an overpressurization of 1000 kPa (145
psi) fluid pressure for a duration of 3 minutes without loss of the ability to
comply with the flow tolerance requirements as
defined on the Injector
Outline Drawing and without sustaining any permanent physical damage.
9.3.6 Over-voltage
Multec 3.5 injectors will withstand high voltage exposure without loss of the
ability to comply with the durability flow tolerance requirements on the
Injector Outline Drawing. The test consists of exposure to voltage of 26V
