How is the operating temperature of the cylinder liner affected?
Liner temperature is hardly affected by viscous shear of lubricant. This implies optimum conditions would be independent of engine speed. Despite extensive research into alternative methods, the internal combustion engine is expected to remain as the primary source of vehicular propulsion for the foreseeable future.
What should the temperature be on cylinder 2?
Three of the cylinders where 340-350. However, cylinder 2 was only 280. That seems like a significant outlier. Since most rental airplanes don’t have a CHT monitor, I don’t have experience with what is the normal temperature. Should I be concerned that one cylinder isn’t close to the other three?
Why is cylinder 2 running richer than the others?
Cylinder #2 is running richer or leaner than the other cylinders. Since you say the engine is not running rough Cylinder #2 would probably be running rich. (This is normally something you’d notice with Exhaust Gas Temperature rather than Cylinder Head Temperature.)
How does air fuel ratio affect cylinder temperature?
The cylinder temperature increases with increases of engine speed however temperature decreases with increases of air-fuel ratio. The volumetric efficiency increases with increases of engine speed and equivalent ratio.
What happens when you run a cylinder at low power?
Running a freshly honed cylinder at low power for a significant length of time can cause a buildup of carbonized oil, known as glazing. If you Google “aircraft cylinder break-in” you’ll be amazed at how much has been written on this subject.
What causes carbonized oil build up in cylinder?
A properly broken-in cylinder has smoothed-off peaks in the cylinder barrel; the valleys between them provide tiny footholds for the oil. Running a freshly honed cylinder at low power for a significant length of time can cause a buildup of carbonized oil, known as glazing.
When do you need to replace all the cylinders in a car?
Sometimes this involves just one or two newly replaced cylinders. Other times all cylinders have been replaced simultaneously in what is known as a top overhaul, and yet other times the entire engine has been major overhauled or exchanged for a new or rebuilt engine. Regardless, the cylinders must be properly broken in.
How often do you need to replace piston engines?
From time to time, every piston aircraft owner faces the question of how best to break in new cylinders. Sometimes this involves just one or two newly replaced cylinders.