Differences
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techtalk:evo:engctl02 [2018/05/21 09:38] ixl2relax [Starter & Solenoid Function] |
techtalk:evo:engctl02 [2018/05/21 09:49] ixl2relax [Starter & Solenoid Function] |
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| * Starting = 160-200amps | * Starting = 160-200amps | ||
| * Running == 145-215amps (Inverse of Voltage Level) | * Running == 145-215amps (Inverse of Voltage Level) | ||
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| - | Technical Note - The pull-in windings are needed to initially move the plunger. Both the pull-in and hold-in windings are activated when the starter relay activates the solenoid. The power to the pull-in windings completes its path to ground thru the motor windings, while the hold-in windings have their own permanent ground path. Once the plunger moves forward into position, and the high-amperage contacts are closed, the pull-in windings are essentially disabled because the power on the output contact **(B)** makes both sides of the pull-in winding equal to 12v. This leaves only the magnetic field of the hold-in windings to keep the plunger in place. | ||
| There are three external cable connections at the Starter Solenoid (see the diagram below):\\ | There are three external cable connections at the Starter Solenoid (see the diagram below):\\ | ||
| - | **(A)** Cable From the Battery Positive Terminal - This direct cable supplys high current for the internal solenoid contacts.\\ | + | **(A)** Cable From the Battery Positive Terminal - This direct cable supplys high current for the internal solenoid contacts **(B)**.\\ |
| - | **(C)** Cable to the Starter Motor - This is a short, high-amperage cable connecting the internal solenoid contact **(B)** to the starter motor (the cable is part of the starter/solenoid assembly).\\ | + | **(C)** Cable to the Starter Motor - Short, high-amperage cable as part of the starter/solenoid assembly.\\ |
| **(E)** Cable From the Starter Relay - A 12v positive signal.\\ | **(E)** Cable From the Starter Relay - A 12v positive signal.\\ | ||
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| {{techtalk:evo:elec:starter-solenoid-81up.jpg}} | {{techtalk:evo:elec:starter-solenoid-81up.jpg}} | ||
| - | The high-amperage internal solenoid contacts are shown in that diagram at the connection labeled '8'. The solenoid activation circuit (which includes the Starter Switch and the Starter Relay) is identified simply with the dotted line near '10'. | + | Technical Note - The pull-in windings are needed to initially move the plunger. Both the pull-in and hold-in windings are activated when the starter relay activates the solenoid. The power to the pull-in windings completes its path to ground thru the motor windings, while the hold-in windings have their own permanent ground path. Once the plunger moves forward into position, and the high-amperage contacts are closed, the pull-in windings are essentially disabled because the power on the output contact **(B)** makes both sides of the pull-in winding equal to 12v. This leaves only the magnetic field of the hold-in windings to keep the plunger in place. |
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| + | In the left diagram above, the high-amperage internal solenoid contacts **(B)(D)(B)** are labeled '8'. The solenoid activation circuit (which includes the Starter Switch and the Starter Relay) is only identified with the dotted line from the battery to the windings at '10' & '11'. | ||
| When the solenoid plunger moves the pinion gear ('1') into mesh with the ring gear('13'), the starter motor is already starting to turn and helps the gears to mesh laterally. Once engaged, the starter motor will continue to rotate the ring gear (as long as the starter button is pressed) until the engine fires. At that point, the overrun clutch ('12') in the solenoid gear assembly allows the ring gear to run faster than the pinion gear shaft without harming the starter unit. When you release the starter button, the solenoid will retract the pinion gear from engagement with the ring gear and the starter unit will return to a resting state. | When the solenoid plunger moves the pinion gear ('1') into mesh with the ring gear('13'), the starter motor is already starting to turn and helps the gears to mesh laterally. Once engaged, the starter motor will continue to rotate the ring gear (as long as the starter button is pressed) until the engine fires. At that point, the overrun clutch ('12') in the solenoid gear assembly allows the ring gear to run faster than the pinion gear shaft without harming the starter unit. When you release the starter button, the solenoid will retract the pinion gear from engagement with the ring gear and the starter unit will return to a resting state. | ||
