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Chapter 30 Engine Starting System

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  • What are the three main sections of the starting motor?
    center frame, drive end frame, brush end frame.
  • Name two reasons for starting the combustion engine in a hybrid.
    a need to recharge the HV battery, a demand for more power during acceleration or high-speed operation, start an engine that has not been started for a certain
  • A(n) _____ is sometimes used to further increase the rotating force applied to the engine flywheel.
    reduction starter
  • What is another name for the pole pieces?
    Pole shoes
  • The magnetic field developed between the pole shoes can be _____ times larger than that of a permanent magnet.
    5–10
  • The _____ uses battery power and an electric motor to turn the engine crankshaft.
    12-volt starting system
  • Starting motors that use field magnets are referred to as _____.
    permanent-magnet starters
  • Why is an overrunning clutch needed?
    Without the overrunning clutch, the starter could be driven by the engine flywheel. The flywheel gear could spin the starter too fast and cause armature damage.
  • Like charges _____ each other and unlike charges _____ each other.
    : repel, attract
  • A _____ uses a small current flow from the start switch or ECM to control a slightly higher current flow to the starter solenoid.
    transistor
    diode
    starter relay
    neutral safety switch
  • The starter solenoid is located _____.
    on a body panel away from the starter
    in the starter motor itself
    on the starter motor
    on the starter motor or on a body panel away from the starte
  • A(n) _____ is made up of invisible magnetic lines of force.
    magnetic field
  • An engine starting system must crank or spin the engine until fuel _____ forces the pistons down and the engine begins to operate on its own power.
    combustion
  • A(n) _____ is a stationary insulated wire wrapped in a circular shape around iron pole shoes located inside the starter motor housing.
    pinion
    commutator
    field winding
    armature
  • The starter pinion gear is the small gear on the _____ that engages the large gear on the _____.
    armature shaft, engine flywheel.
  • True or False? The internal combustion engine in a hybrid runs only when it is needed.
    true
  • All of the following are used to increase starter motor power and smoothness, except:
    a commutator with many segments.
    several loops of wire.
    connecting each winding to its own segment on the commutator
    removing the pole shoes.