When the starter to operate, the battery terminal voltage decreases by a large amount of current flow. Even if the battery voltage is normal before the engine starts, the starter cannot be rotated normally Read more Inspection of the Battery Voltage
Starter System
Construction of Conventional Starter
Conventional type
1.Construction differences between the conventional type and the reduction type (figure on the left)
2.Engagement/disengagement of the pinion gear
(1)Magnetic switch
The construction Read more Construction of Conventional Starter
Engagement / disengagement mechanism
The engagement/disengagement mechanism has two functions.
Engages the pinion gear with the ring gear.
Disengages the pinion gear from the ring gear.
Engagement mechanism
When the end faces Read more Engagement / disengagement mechanism
Overrunning clutch
<1>While the engine cranks
When the clutch gear (outer) revolves faster than the spline shaft (inner), the clutch rollers are forced to the narrower section, and so the revolving force of the Read more Overrunning clutch
Automotive Magnetic switch
The magnetic switch has two functions.
Motor ON/OFF
Pinion gear engagement and disengagement
Also, the magnetic switch operates in three steps when the starter is operated.
Pull-in
Hold-in
Return
If Read more Automotive Magnetic switch
Components of Reduction Engine Starter
The starter consists of the following components.
1.Magnetic switch
2.Armature
3.Yoke sub-assembly
4.Brush and brush holder
5.Reduction gear
6.Overrunning clutch
7.Pinion gear and helical spline
Characteristics of DC (Direct Current) series motor
(1)Relationship between starter speed, torque and current
A circuit of a motor basically consists of only coils. The resistance value inside the circuit is very small because only the resistance value Read more Characteristics of DC (Direct Current) series motor
Description of Automotive Engine starter
Since the engine cannot be started by itself, external power is required to generate the first combustion to start it. To start the engine, the starter rotates the crankshaft via the ring gear.
The starter Read more Description of Automotive Engine starter