Navistar MaxxForce 7

SECTION1–ENGINESYSTEMS
EngineFeatures(cont.)
ColdAmbientProtection(CAP)
CAPkeepstheenginewarmduringcoldtemperaturesand
mayprovidebetterfueleconomy,increasedoperatorcomfort,
andimprovedengineperformance.Thisfeatureshouldonly
bedisabledforspecializedapplications.Enginedamagemay
occurifCAPisdisabled.
CAPmaintainsenginecoolanttemperaturebyincreasingengine
rpmtoaprogrammedvaluewhenambientairtemperatureis
below32°F(0°C),coolanttemperatureisbelow167°F(75°C),
andenginehasbeenidlingatnoload(ordriverinput)forover
veminutes.
ForfurtherinformationseeColdAmbientProtection(CAP)(page
58).
ElectronicGovernorControl
Thegovernorcontrolsenginerpmwithinasafeandstable
operatingrange.
Thelowidlegovernorpreventsenginerpmfromdropping
belowastablespeedtopreventstallingwhenvariousloadsare
demandedontheengine.
Thehighidlegovernorpreventsenginerpmfromgoingabovea
safespeedthatwouldcauseenginedamage.
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