What is windage in an engine?
In automotive parlance, windage refers to parasitic drag on the crankshaft due to sump oil splashing on the crank train during rough driving, and/or dissipating energy in turbulence from the crank train moving the crankcase gas and oil mist at high RPM.
What is the purpose of a windage tray?
The windage tray keeps the windage around the crank from the oil in the sump area. It allows the oil coming off the crank to easily enter the sump without the windage affecting the scavenging of oil already in the sump.
Are crank scrapers worth it?
If you’re looking for the most horsepower, a crank scraper is worth every penny. Scraping oil from the crankshaft counter weights and throws while it’s rotating increases both torque and horsepower. When installing these scrapers, you will have to fit them to your rotating assembly.
What is a crankshaft scraper?
A crank scraper (sometimes known as an oil wiper, etc.) is a broad term for technology that actively strips away oil entrained in the air around, as well as oil physically adhering to, the rotating bottom end. Crank scrapers also serve to disrupt the pressure differential that forms in and around the rotating assembly.
What is windage loss in DC motor?
Mechanical Losses in dc machine Mechanical losses are divided into bearing friction loss and windage loss. The losses occurring in the moving parts of the machine and the air present in the machine is known as Windage losses.
How do I install a windage tray?
To install studs: Remove a main bolt (main cap can be removed or left in place), tap threads, coat coarse threads with oil, screw stud in by hand, thread 2 main nuts on tray stud and lock them tightly together, lightly tighten tray stud 10-15 ft/lbs (making very sure that double nuts are not slipping or have run into …
What power is lost in the stator?
Motor power flow Power is then lost in the stator circuit, and the stator core. The remaining power is transferred to the rotor. Deducting the rotor losses, one obtains the power converted to the mechanical system.
How are stator losses calculated?
DC can measure the stator resistance. The hysteresis and eddy current loss in the conductors increase the resistance, and the effective resistance is taken at 1.2 times the DC resistance. The rotor copper loss is calculated by subtracting the stator copper loss from the total measured loss or the rotor I2R loss.
What are the 2 main types of losses in a motor?
There are two main kinds of losses in electric motors, which are often referred to as iron losses and copper losses. Dealing first with iron losses, these are made up of two ‘components’, namely eddy current losses and hysteresis losses.
What does a crank scraper do for windage?
While it doesn’t actually physically scrape the crankshaft like a razor blade against the skin, it does get quite close to the crank, physically, and traps oil coming off of the spinning crankshaft, preventing it from being slung upward into the crankcase. The crank scraper is the simplest form of windage control.
Where does windage come from in a car?
Windage is the parasitic drag on the crankshaft created by sump oil splashing onto the crankshaft during rough or spirited driving. As a result, there is dissipated energy in turbulence from the crankshaft, moving the crankcase gas and oil mist at high RPM.
How does windage affect the performance of an engine?
The next method through which windage can reduce your engine’s performance is through brute force. Ideally, the crankshaft would spin through clear air and only face air resistance.
How does windage affect life in the crankcase?
There are a number of avenues in which windage makes life in the crankcase less than ideal. When any liquid is churned with air, you get aeration. In the case of engine oil, aerated oil has a number of drawbacks. First, aerated oil doesn’t pump as smoothly.
What are the studs on a Chevy windage tray?
SB Chevy 7/16″ Windage Tray Stud (1pc.) BB Chevy 1/2″ Windage Tray Stud (1pc.) The Small Block Mopar and 392 tray mounts on windage tray kit #81151 on #3 and #4 main caps. This allows adjustment for larger strokes as well as aluminum rods. The tray has a notch to allow the pickup to exit the oil pump without interference.
While it doesn’t actually physically scrape the crankshaft like a razor blade against the skin, it does get quite close to the crank, physically, and traps oil coming off of the spinning crankshaft, preventing it from being slung upward into the crankcase. The crank scraper is the simplest form of windage control.
There are a number of avenues in which windage makes life in the crankcase less than ideal. When any liquid is churned with air, you get aeration. In the case of engine oil, aerated oil has a number of drawbacks. First, aerated oil doesn’t pump as smoothly.
Why do you need a windage tray in an engine?
These come in a number of designs and are even included on some factory engines. The idea behind a windage tray is that they provide a physical barrier between the violently moving crank with the oil it’s throwing everywhere, and the oil supply, while still allowing oil to move back into the oil supply in a smoother, calmer manner.