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Alternators
An alternator is an old term for electric generator that converts mechanical energy to electrical energy producing alternating current. Alternators are mainly used for recharging batteries and to power electrical loads of vehicles.
4,629 Questions
In a rechargeable battery system what is the discharging reaction?
Discharge cycle is the rate at which a battery i used to do work it changes with the load. Charging cycle is the time required for the same battery to reach a point whereas is ready to do work again, BOTH RATES ARE SET BY THE BATTERY MANUFACTURE FOR OPTIMUM LIFE EXPECTANCY.
How do you replace the alternator in a 2004 Nissan sentra 1.8?
Unfasten the alternater mounting bolts, detach the electrical connector and disconnect the lead wires.
How to replace alternator on 1995 Nissan Sentra?
The alternator on a 2001 Nissan Sentra is replaced by loosening the serpentine belt tension, loosening the alternator bolts, and slipping the belt off the pulley. The alternator can then be unbolted, the wiring harness disconnected, and a new alternator put in place.
How much RPM to produce an 12v dc by an alternator?
A: It all depends on the engine idle speed and cylinders. All cars at idle speed must charge the battery to 13.68 volts the RPM is a function of cinders
Where is the alternator on a Honda Shadow 600?
Stator (alternator) and removal/and installation: 1. Place the bike on the center stand. 2. Remove both side side covers and the seat. 3. Disconnect the battery negative lead. 4. a) 1983-85: disconnect the electrical connector going to the alternator/stator assembly b) 1986 and on: remove the fuel pump stay. Then disconnect the electrical connector going to the alternator/stator assembly. 5. Remove the screw securing the left hand rear crankcase cover and remove the cover. 6. Remove the exhaust system from the rear cylinder. 7. Remove the bolt securing the gear shift pedal and remove the pedal. 8. Remove the bolts securing the left front foot peg and remove the foot peg. Note: in the following step it is not necessary to disconnect the hydraulic from the clutch slave cylinder. If the hydraulic line is disconnected the clutch system must be bled. 9. Remove the bolts securing the clutch slave cylinder and bracket. Remove the bracket and pull the clutch slave cylinder, with the hydraulic line still attached, back and out of the way. 10. Remove the bolt securing the coolant pipe protector and remove the protector. 11. Remove the bolt securing the alternator cover and remove the cover, gasket and the electrical harness from the frame. Note the path of the wire harness as it must be routed the same during installation. 12. Remove the electrical harness from the clips on the frame. 13. Remove the bolt and wire clamp securing the wire to the housing. 14. Remove the bolts securing the alternator/stator to the alternator cover. 15. Carefully pull the rubber grommet and electrical wire harness from the alternator cover. 16. Install by reversing these removal steps, noting the following: 17. Be sure to install the wire clamp. If the clamp is left off the rotor may rub against the wires, wear off the insulation and cause a short in the circuit. I hope this tells you where the alternator is. It may help if you want to remove it.
Why is my 1990 Chevy van G20 alternator not charging and is not getting power?
The alternator is not getting power? At any of the wires or just the main/largest one? If you are testing the large wire, this is the output side that runs to the battery. If there is no power in this wire where it connects to the alternator it must have a bad connection at the alternator or at the battery or a break somewhere in between. If there is power there, I would look at the fuses.
How do you remove the power steering pump alternator bracket on a 1995 Chevy Silverado?
I need help on how to remove my powersteering pump? You must first remove the power steering pump pulley. Most part stores have a tool loaner program so you can borrow the puller and and return it and get your money back. After the pulley is removed there are 3 bolts holding the power steering pump to the bracket. Pull those and the long bracket that is on the back of the pump and connects to the exhaust manifold and alternator and the pump should slide out. This information is for a 5.7L engine, but I believe it is close to the same for a 4.3L.
How do you change an alternator on a Chevy Blazer?
unplug batt,undo 2 bolts on alt,remove belt by pushing down on tension pully,jack handle will help pry it off,it`s relly easy.
How do you change alternator on a Honda Odyssey 2000?
1. Remove one battery Terminal. Remove front of engine top plastic cover-2 plastic screws and a push pin.
2. Rotate Tensioner Pulley to remove belt from Alt only. Just let it hang underneath.
3. Remove white overflow bottle by just pulling it up and hanging over front of car. Leave the hose attached.
4. Remove the small bolt under Power Steering Fluid Resevoir. This gives you room to extract Alt.
5. Remove 2 bolts holding Alt in place.
6. Rotate Alt so you can get to power cable. Pull back rubber housing, remove nut.
7. Pull back rubber cover and Squeeze side of plastic electrical connection and pull out. Do not damage. It can be tight from being in there for so long.
8. Slowly extract Alt to left of engine. You may have some minor interference from hoses that require you to push or adjust slightly. Carefully wiggle it around, it will fit.
Now reverse the whole process.
How do you change the alternator on a Ford Fiesta?
Hello, Jamison here, This is not A difficult job, It should take YOU about 2 hours, Note how the belt is routed, It should have A sticker that showes A picture,,, Disconnect the battery, Remove the belt, This is done by locating the tensioner and pulling back from the belt (it is spring loaded)using A ratchet or A wrench, It may have A square hole in the moveable part of the housing if so A ratchet will fit in the hole,,,, now just unbolt the alternator and disconnect the wires, There will be A plug in wire and A bolt on wire, BE CAREFUL NOT TO DAMAGE THE WIRE ENDS, Also DO NOT OVERTIGHTEN THE NEW unit while putting on the bolted wire.,, Good luck, Jamison. If you have difficulty finding the tensioner, Just pull HARD on the belt were it has A strait spot, act like you are trying to check the tension of the belt, BUT PULL hard, The tensioner will let out slack, Just look for the part that moved,, Also this will help you identify the dirrection that you need to move the tensioner to remove the belt.........
How do you replace the alternator on a 1995 Saturn sl?
It is relatively simple for any car:
1) Disconnect the battery. This is incredibly important. Do not skip this step.
2) Disconnect the wiring from the back of the old alternator.
3) Remove the belt from the alternator pulley.
3a) If the belt is serpentine look for a spring loaded tension pulley. Push on this and slip the belt off a convenient pulley. The entire belt will go slack.
3b) If you have individual belts the alternator should be mounted on a slotted bracket. Loosen the bolt to this bracket and the alternator should move so you can get the belt off.
4) Remove the old alternator. Depending on the car this is where it gets tricky. Sometimes they bury the thing so well you have to remove other parts of the engine to get it off. Take your time.
5) Insert the new alternator and replace anything else you had to take off.
6) Put the belt back on the alternator and tension it, if necessary.
7) Connect the wiring to the alternator
8) Reconnect the battery.
9) Take a measurement of the system voltage with the motor off.
10) start the motor.
11) Take a measurement of the system voltage. It should be around 14V. If your battery is very dead this may not be the case. Compare to the above measurement. If the voltage is rising to around 14V, it is working.
To get to the alternator, you have to get it from the bottom of the car. Make sure you disconnect the battery! I just did the job today (2-13-06) with another person. You don't need 2 people, but it helps tremendously. It's rather tight in some of the locations, but it's definitely workable.
First, you must remove the front passenger side wheel and place the car up on Jack stands. It helps to have the whole front elevated as you will be working underneath the car most of the time. Then remove the plastic guards that are behind the wheel. They are held in place by two plastic pins (the anchor type pins).
Once the car is up, refer to the diagram under the hood that gives the serpentine belt routing. You'll see the Tension wheel that you need to move. It's really easy to get to from the wheel axle level. Use a 14mm wrench (NOT A SOCKET!, it's too small of a space to fit the barrel of the socket). Grab onto the bolt head on the wheel and turn clockwise. The whole assembly then moves down, as it's on a spring. That will loosen the Serpentine belt. If you have another person, have them remove the serpentine belt from one of the pulleys as you are holding down the tension pulley. Once the belt is off, ease the tension pulley back into place. You can now pull the belt off all the pulleys.
The alternator is held in by two bolts. they are 13mm bolts, you can use a socket for these. The top bolt is harder to find and easier to reach and loosen if you do it from the bottom of the car. It takes time to loosen, but it can be done. The bottom is a long bolt with a nut on the end. You'll need a 13mm wrench and a 13mm socket for this. From under the car looking at the alternator, place the wrench on the left side of the bolt and the socket wrench on the right. The right side is a nut that holds the bolt in place. Remove the nut and pull the bolt out to the left.
Next, there is a plastic guard that protects the wiring. You can remove that by using a 10mm ratchet on the bolt that is on the left hand side (from underneath the car) of the alternator. it sits just above the grounding wire. Remove that bolt. If you have someone helping, have them reach through the top of the car and hold the alternator in place while pushing the guard up. It is also held by a little clip, so if you push up you'll unlatch it. Pull the guard off and set aside.
Next, remove the grounding wire on the side with a 10mm socket wrench. Then unclasp the clip holding the wiring to the alternator with a flat head screw driver. You'll see how the clip is removed when you see it.
Next, remove the alternator. It may be stuck in place, so have someone come from the top or from the bottom to pound one of the sides where the long bolt was. Once free, remove it through the wheel well.
Once you have this done, just reverse the directions to install the new one. It's fairly easy once you've removed it, to see how it's done.
Hook up the battery and start the car!
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How do you measure insulation resistance between windings for 120KVA alternator?
Use a megger or a insulation tester. Place one lead on any of the phases nd other lead the alternator boy. Observe the indicator. In megger it s good with infinity or it must be minimum 100M OHM, IF IT SHOWs 50 it could be coz of moisture in winding by heating the alternator the insulation resistance value may improve
What are the parts of a direct current generator?
there are many parts of a dc generator
armature,
field coil,
yoke,
body,
rotor and commutator.
How do you modify an automobile alternator from DC to AC?
The automobile alternator is already an AC device. It generates three phase delta AC, which is then rectified with a six diode full wave bridge array into DC.
You don't really want to modify it, though, as it is designed for the specific application. It is possible, though, to connect to the stator terminals and access three phase AC. You would then need to redesign the exciter (rotor) control circuit in order to manage the output.
If you are thinking about doing this as an alternative to a generator to supply your home during a power outage, don't; its not worth the effort - buy a generator.
What is the function of a rectifier within an alternator?
A rectifier turns the Alternating Current (AC) produced by the Alternator into Direct Current (DC) that your car uses.
What kind of electricity does an alternator make DC or AC?
It makes AC ( alternating current ) . That's why it's called an alternator. A DC generator would usually be called a dynamo.
What are the cooling methods used for cooling an alternator?
Air cooling ,hydrogen gas cooling ,water cooling
What is the EMF equation of alternator?
EMF equation of DC GeneratorE = (ΦNPZ) / (60 * A)
where,
E = e.m.f induced in any parallel path in armature
Φ = flux per pole in weber
N = armature rotation in revolutions per minute (r.p.m)
P = No.of generator poles
Z = total number of armature conductors
A = No.of parallel paths in armature
Why alternator is preferred to dc generator?
DC generators are always useful in case of power outages. Many commercial companies use generators as back up units. DC generators are also energy efficient.
Difference between ac dynamo and dc dynamo?
1. AC Dynamo has full rings whereas DC Dynamo has split rings.
2. AC Dynamo produces alternating current whereas DC Dynamo produces direct current.
3. IN AC DYNAMO, CURRENT KEEPS CHANGING EVERY HALF OF A CYCLE WHEREAS IN DC DYNAMO, CURRENT FLOWS IN SAME DIRECTION.
Is the dynamo of a bicycle light ac or DC?
There are two types of electrical generator.
One is a dynamo, which produces d.c.
The other is an alternator, which produces a.c.
What are the uses for a dynamo?
A dynamo is another name for an a.c. or d.c. electrical generator. They are used for converting mechanical energy into electrical energy.
How is alternating current produced?
AC alternating current is generated by magnets spining in a generator at 3000 rpm for 50 hz 3600 rpm for 60 hz (1 pair of north south magnets) 1500/1800 for two pairs and so on,
the magnets move the electrons in the wire- copper (since electrons dont like to be neer each other) they move a very tiny amount then back to where they started <<<>>> motion,
in fact the electrons in the power plant never leave the power planet it is just the electrons moveing each other a tiny amount that creates a current.
What are the reasons for generating energy as alternating current?
ENERGY CAN BE GENERATED ONLY AS A ALTERNATIG CURRENT.THERE IS NO WAYS OF GENERATING ENERGY AS A DC DIRECTY.IN CASE OF DC GENERATION ,AC IS GENERATED FIRST AND THEN RECTIFIED INTO DC. TO UNDERSTAND THIS CLEARLY YOU NEED TO KNOW THE WORKING OF GENERATORS. THE REASONS FOR GENERATING ENERGY AS AC IS ENERGY CANNOT BE GENERATED AS DC.
