Einbaulage Turbolader wichtig? | Posts 16+

christians wrote:

ATMs use wedge bearings instead of just simple thrust washers because, in case of doubt, the forces from the gas pressure are higher than the gravitational force. The radial bearings also have the same problem when the motor is stopped.

These shelves are designed specifically for this type of built-in shelving.

Quote:

Lawnmowers also have a vertically oriented crankshaft.

Here as well, the compartments are designed for exactly this type of built-in storage.


The goal here is simply to reverse the installation orientation. And that's not always easy (unless the loader is designed for it -> see datasheet!).

matthiasTDI96 wrote:

... but lawnmowers and plain bearings???

I haven't seen that before either.

I still can't quite understand it. I used to calculate plain bearings before, but the orientation wasn't a parameter in those cases. Of course, if a bearing is only loaded by the rotor mass, the direction of that force matters, but that's not the case here. We should quickly do some calculations to get a rough estimate, but it's not trivial.

I didn't say that a lawnmower has plain bearings; I was only referring to the bearings of the crankshaft.

christians wrote:

... If a bearing is only loaded by the rotor's mass, that naturally has an effect on which direction the force acts. However, that is not the case here.

Why is this not the case here?
So, you're assuming that your engine will never be turned off and that the turbocharger will run continuously?

Then your statement is correct.

This concerns long-term durability. This includes start and stop operations.

Since the turbocharger mentioned above comes from an industrial engine, I even suspect that start-stop cycles are less of a concern in this application. These engines (and their components) are designed for continuous operation.

Heating pump . For example, Grundfos even states that it must be leveled using a spirit level to avoid axial forces on the floating bearing of the rotor .

Lawnmowers: Some models already come with one plain bearing and one ball bearing.

This means that in normal operation, no axial forces act on the rotor of the heating pump. Combined with the poor lubricating effect of water, this would inevitably lead to wear if the shaft is misaligned.

Conversely, the charger always experiences an axial load, and the tilt angle is already significantly limited due to oil drainage. If the axial force increases by only a few percentage points as a result, that shouldn't be a problem. Others increase power and often also boost pressure through data manipulation, which in turn increases the bearing load.
I'm not trying to rotate the ATL by 90 degrees.

The problem isn't really the bearings themselves. As mentioned earlier, the issue is the general mounting position with regard to oil drainage. If the axis is tilted, the oil may not drain properly, or at all. This can then lead to oil coking or oil leakage into a flow housing.