How does start-stop engines challenge motor oil?
How does start-stop engines challenge motor oil?
Starting the engine allows the microscopic peaks on the metal surfaces to contact and cause wear until the oil film has been reestablished and the crankshaft is once again floating over the bearings. This is where the oil’s additives play a huge role in protection. Granted, only minimal wear may occur each time the engine is started.
Why is the engine oil so critical for start-up?
Why is the engine oil so critical? Fig. 1 on page 38 shows a simple oil flow schematic for the 6.0L diesel engine. In order for the fuel injectors to operate, a minimum of 500 psi oil pressure is required for start-up.
Can a high pressure oil pump hard start a car?
The high-pressure oil pump can deliver up to 3600 psi, but only if the low-pressure oil system delivers the oil to the high-pressure pump. Understanding the low-pressure and high-pressure oil systems is critical for diagnosing hard-start/no-start problems, so let’s take a closer look at these systems in detail.
How does a start stop engine save fuel?
In principle, start-stop engine technology is simple: the engine automatically shuts off while you’re idling and restarts when you take your foot off the brake. This reduces fuel wasted while idling.
What to look for when your engine won’t start?
Check for a blown fuse that may be preventing a circuit from working properly, like the fuel injection or computer system. To operate efficiently, an internal combustion gasoline engine needs a good spark, the right amount of fuel, and good compression (a healthy mechanical condition).
What to do when fuel mixes with oil?
If your engine has a fuel shut-off valve, ensure that this valve is closed when the engine is not in use. If carburetor problems are causing fuel to mix with your oil in the crankcase, you should perform a thorough cleaning.
Why does my car not start when I crank the engine?
If the engine doesn’t crank, or makes an unusual noise when cranking, you may have a starting system problem. The car’s security system may have made an error that disabled the fuel or ignition system, or the chip in the key may have failed.
What makes an internal combustion engine not start?
To operate efficiently, an internal combustion gasoline engine needs a good spark, the right amount of fuel, and good compression (a healthy mechanical condition). The lack of any of these three things will prevent your engine from starting.
