Diyvehiclerepair
- What will retarding timing do?
- Does advancing timing require more fuel?
- Does retarding timing increase torque?
- Does advancing timing lean or rich?
- Is Advanced timing BTDC or ATDC?
- What happens if timing is too advanced?
- Does advancing timing increase RPM?
- Does advancing timing Increase temperature?
- Can timing affect fuel economy?
- What should my timing advance be?
- How do I know if my ignition timing is too advanced?
- What is the purpose of timing advance?
- What is the purpose of vacuum advance?
- What is LTE time advance?
What will retarding timing do?
Ignition Retarding. ... Ignition timing retarding causes the spark plug to fire later in the compression stroke. The effects of retarding ignition timing include reducing engine detonation, which is combustion inside the cylinders after the spark plug fires. This is also known as engine knocking.
Does advancing timing require more fuel?
When setting the timing for an automobile engine, the factory timing setting can usually be found on a sticker in the engine bay. The ignition timing is also dependent on the load of the engine with more load (larger throttle opening and therefore air:fuel ratio) requiring less advance (the mixture burns faster).
Does retarding timing increase torque?
“Why does retarding spark timing increase low-end torque?” Spark retarding reduces knocking, thus allowing higher loads at low engine speeds. At high engine speeds, however, spark retarding leads to loss of power due to lack of time for complete combustion. So it is most useful for increasing low-end torque.
Does advancing timing lean or rich?
Will advancing timing make a car run more lean or rich? - Quora. Neither ! Advancing Ignition timing does not effect air/fuel ratio unless it's extremely late that manifold vacuum pressure drops so low causing the map sensor, metering rods to enrich the fuel mixture.
Is Advanced timing BTDC or ATDC?
The opposite of BTDC is ATDC or after top dead center. This describes an ignition event that is initiated after the piston reaches TDC and is already traveling downward in the cylinder bore. In engine parlance, when the ignition event is begun BTDC the timing is advanced and when it happens ATDC it is retarded.
What happens if timing is too advanced?
Overheating. If ignition timing is too far advanced, it will cause the fuel-and-air mixture to ignite too early in the combustion cycle. This can cause the amount of heat generated by the combustion process to increase and lead to overheating of the engine.
Does advancing timing increase RPM?
Yes. The actual burn time in the cylinder remains the same while the higher the rpms the less time is “given”. So basically the igntion timing has to advance with the rpms - which it does on most modern engines with single coil ignitions.
Does advancing timing Increase temperature?
It can also be seen that advancing the timing increases the peak temperature (see Fig. 16.18) achieved during combustion, but tends to decrease the release temperature, while retarding reduces the peak temperature but increases the release temperature.
Can timing affect fuel economy?
Newer cars have the ability to adjust to lower quality fuels to a certain degree to prevent pinging or knocking. This is accomplished by not advancing the ignition timing as much, which leads to poor mileage. The money you save on the fuel may disappear from lower mileage and performance.
What should my timing advance be?
Most naturally aspirated engines like a total timing of 34 to 36 degrees BTDC, (Before Top Dead Center) AKA "Advance". Nitrous and supercharged engines usually run less than that, unless you plan on blowing the heads off the engine or blowing holes through your pistons.
How do I know if my ignition timing is too advanced?
Clues that the timing is too advanced would be hard cranking, the engine tries to kick back when cranking, rough idle can be caused by too much advance, and detonation is another sign of too much advance. There is no such thing as too much ignition timing.
What is the purpose of timing advance?
Advancing the timing means the plug fires earlier in the compression stroke (farther from TDC). Advance is required because the air/fuel mixture does not burn instantly. It takes time for the flame to ignite the all the mixture. However, if the timing is advanced too far, it will cause an Engine Knock.
What is the purpose of vacuum advance?
Under a light load and part throttle conditions, timing can be advanced. This improves throttle response and makes the engine more efficient. It also helps the engine run cooler. The vacuum advance provides this benefit BEFORE the Mechanical Advance provides Total Timing.
What is LTE time advance?
Timing advance is a negative offset, at the UE, between the start of a received downlink subframe and a transmitted uplink subframe. This offset at the UE is necessary to ensure that the downlink and uplink subframes are synchronised at the eNodeB.
