-
-
-16--16-
6. - OPERATION6. - OPERATION
6.1. - START-UP AND MESHING6.1. - START-UP AND MESHING
The starter has two successive operations:The starter has two successive operations:
-- First actioFirst action: in n: in which thwhich the pine pinion carrieion carries out s out an aan approach pproach movement movement to the to the crown whcrown wheel aeel andnd
simultaneously a double turn that favours the meshing of both elements. Only when the meshing hassimultaneously a double turn that favours the meshing of both elements. Only when the meshing has
been completed succebeen completed successfully is it ssfully is it possible to proceed to the second movement.possible to proceed to the second movement.
--
Second Second movement: the movement: the main main valve is valve is opened, opened, giving the giving the motor body motor body the the possibilitpossibility y to to develop itsdevelop its
maximum power.maximum power.
6.2. - START UP
6.2. - START UP
Once the second movement has been carried out, the starter Once the second movement has been carried out, the starter accelerates the motor very quickly, therebyaccelerates the motor very quickly, thereby
reducing losses in the reducing losses in the cylinders to the cylinders to the maximum until the compression is maximum until the compression is achieved under appropriate conditionachieved under appropriate conditionss
for producing ignition if the fuel feed is for producing ignition if the fuel feed is correct.correct.
6.3. - SHUTDOWN
6.3. - SHUTDOWN
The shutdown can take place for different reasons:The shutdown can take place for different reasons:
- FOR ABSENCE OF SIGNAL- FOR ABSENCE OF SIGNAL
If the signal fed by the electro valve or the air If the signal fed by the electro valve or the air plunger is cut off, the starter is stopped and disengages.plunger is cut off, the starter is stopped and disengages.
Control of the signal time Control of the signal time can contribute to reducing the consumption of start-up air andcan contribute to reducing the consumption of start-up air and
lengtheninlengthening the useful life g the useful life of the starter.of the starter.
- FOR BACKWARD MOTION OF THE DRIVE PINION
- FOR BACKWARD MOTION OF THE DRIVE PINION
At the moment when the motor comes into At the moment when the motor comes into operation on its own, the greater torque generated by the operation on its own, the greater torque generated by the latterlatter
causes disengagement and an internal mechanism produces shutdown of the starter.causes disengagement and an internal mechanism produces shutdown of the starter.
6.4. – DISENGAGEMENT
6.4. – DISENGAGEMENT
When shutdown takes place for any of When shutdown takes place for any of the reasons indicated in point 5.4, the drive pinion is the reasons indicated in point 5.4, the drive pinion is automaticalautomaticallyly
withdrawn to the idle position.withdrawn to the idle position.
6.5. - RESTART
6.5. - RESTART
When the starter has been stopped, it will When the starter has been stopped, it will remain immobile until the control air pressure disappears (electroremain immobile until the control air pressure disappears (electro
valve or plunger), for which rvalve or plunger), for which reason, in order to operate the starter eason, in order to operate the starter again, it is necessary to again, it is necessary to cease acting on thecease acting on the
plunger or to disable the electro valve briefly.plunger or to disable the electro valve briefly.
Since the actual starter mechanisms are incapable of detecting whether the motor is Since the actual starter mechanisms are incapable of detecting whether the motor is rotating or has stoppedrotating or has stopped
after a start-up intent, this after a start-up intent, this operation prevents the starter from insisting on another meshing action while theoperation prevents the starter from insisting on another meshing action while the
person in charge of controlling the same is person in charge of controlling the same is not sure that the not sure that the motor is totally at motor is totally at rest, preventing the drive pinionrest, preventing the drive pinion
from attempting to engage if the crown wheel of from attempting to engage if the crown wheel of the motor is still the motor is still in motion, which could lead to serious damage.in motion, which could lead to serious damage.
Before attempting a new start-up always make sure that Before attempting a new start-up always make sure that the crown wheel of the the crown wheel of the motor hasmotor has
stopped.stopped.
To Next Page
Loading...