7. Systems of start and charge

The system provides an engine provorachivaniye for the purpose of its start.

The main components of system are a starter with the traction relay installed on it, the rechargeable battery, the lock of ignition and a connecting electrical wiring.

At turn of the ignition key in situation START power supply from the battery on a chain of management of start moves on the traction relay of a starter. The relay makes switching of power supply of the battery directly on a starter electric motor. The motor begins to rotate, at the same time turning for a gear wreath of a flywheel / a driving disk a bent shaft of the engine.

Functioning of a starter on the models equipped with RKPP becomes possible only at the squeezed-out coupling pedal. On models with AT an indispensable condition is transfer of the lever of the selector to situation "P" or "N".


Design of Mitsubishi starter used on the Infiniti QX4 models


Precautionary measures

When performing any works with components of system of start it is necessary to observe the following special precautionary measures:


System of a charge


General information

The generator of alternating current which is built in it tension regulator, a control lamp of a charge, the rechargeable battery, a protective fusible insert and the electrical wiring connecting the listed components is among components of system of a charge. The system of a charge provides giving of electric food to system of ignition, lighting and alarm fixtures, the radio receiver and other consumers of the electric power. The generator is put in action by the belt drive from a pulley of a bent shaft. Additional information on electric connections of components of system of a charge can be gathered from schemes of electric connections (see the Head Elektrooborudovaniye).

The electronic control unit (ECM), depending on the current values of input parameters (engine turns, speed of the movement of the car, temperature of cooling liquid, the number of the included consumers of the electric power and temperature of the soaked-up air), makes adjustment of size of tension developed by the generator. The main task of system is minimization of load of the engine.

Problem of the regulator of tension is restriction of tension developed by the generator in the set limits. The regulator prevents the overloads of contours and the other unpleasant phenomena connected with power surges.

The system of a charge does not need regular service. Nevertheless, it is necessary to check periodically a condition of a driving belt of the generator, battery, a connecting electrical wiring and its terminal connections (see the Head Routine maintenance).

The control lamp of a charge which is built in in an instrument guard quickly joins at turn of the ignition key in position of ON. Right after implementation of start of the engine the lamp has to go out. The refusal of a lamp of switching off testifies to malfunctions in system of a charge. On some models in an instrument guard the voltmeter allowing the driver to trace in time deviations of onboard tension from norm in addition is installed. At a release of indications of the voltmeter out of limits of admissible range it is necessary to make check of system of a charge.

The fusible insert represents the short piece of the wire placed in isolation which is built in in the main braid of an electrical wiring of a motive compartment. Total section of a vein of the conductor of an insert several times is less than at an electrical wiring of a chain in which it is included that guarantees reliable protection of the last against an overload.


Design of the Hitachi generator used on the Infiniti QX4 models


Precautionary measures

When joining terminal connections of electric chains of the cars equipped with the generator of alternating current it is necessary to observe special precautionary measures: