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13 kwi 2012 · To know for sure, you should be able to get a spec sheet for the alternator which will give the output levels for input RPM. You then calculate the ratio of engine RPM to alternator RPM (due to pulley sizes), and you have an exact answer.
The following chart describes alternator output based on two temperature levels (ambient (26 o C) and hot (60 o C)). Test voltages are set at 13.5V (for 12V units). Engine-to-alternator drive ratios vary by engine, but a conversion factor of 2 is shown here for simplicity. Engine RPM. 500.
17 paź 2022 · One way to make an alternator charge at low RPM is by reducing the size of the alternator’s pulley. Reducing the pulley allows the alternator to run faster at the same speed. Even if the RPM is low at this point, charging will take place because the alternator is running fast.
The charging voltage should be between 13.9v to 14.4v. Also the voltage at the battery and the voltage at the alternator should be within 0.5v of each other. If the voltage at the battery and alternator don't match. For example the battery reads 12v and alternator reads 14v.
31 mar 2022 · Regulated voltage inspection – Run the engine at approximately 2000 rpm and check the regulated voltage at the alternator output stud (B+) terminal when current output reaches approximately 10A (Refer to the test standards and values designated by the relevant vehicle manufacturer).
26 maj 2021 · First, we’ll look at IL, which, in this case, is 50. That means this alternator is capable of putting out 50A at the “low” test speed, which is either 1,500 RPM or “the idle speed of the engine,” depending on which standard you’re dealing with.
1 gru 2014 · Once the engine is started and alternator is turning, the battery's job is over. Most modern alternators can achieve max output at idle and use the regulator to determine how much to actually produce to both recharge the battery from starting and keep the engine and everything powered.
