ECM BB100, Инструкция по эксплуатации, Страница: 13 / 37

The recommended procedure to install the BB100 is as follows:
1. Decide where the BB100 is to be mounted. The meter should be above the level of oil in
the engine and mounted using the supplied bracket. The bracket holds the meter straight
up with the top tilted back approximately 30 degrees (see Figure 3). The purpose of this
orientation is to drain any condensed material from the meter. The meter will work in
any position but will work the longest before draining or cleaning is required by
mounting it this way.
2. Run a ¾” heater hose from the engine’s crankcase (take PCV valve out) to a 15 gallon
damping tank and then from the damping tank to the inlet (upper hose connection) of the
meter. The hose should not have any “dips” in it where oil and water could collect and
plug the hose. Minimize the hose length to minimize the backpressure on the engine.
3. Run a ¾” heater hose from the exit (lower hose connection) of the meter to the outside.
Do not vent the blow-by to a room where people are in because blow-by is essentially
exhaust (poisonous).
4. The outer tanks of the BB100 can be installed so that the inlet or outlet point left or right.
No matter what directions the inlet and outlet face, it is important that the holes in the
inner tanks (under the outer tanks) face away from the inlet or outlet hose connections.
This maintains the accuracy of the meter’s calibration. Use hose clamps on all
connections.
5. Pressure and temperature measurements can be made by inserting transducers into the
1/8” NPT pipe taps in the upper tank of the BB100.
6. Typically, blow-by is measured with flow from the outlet hose venting to atmosphere.
Alternatively, this flow can be throttled (or drawn) slightly so as to maintain a constant
engine crankcase pressure (or vacuum) of a few inches of water. The throttling (or
vacuum) will have to be adjusted at different engine operating conditions to maintain the
constant crankcase pressure (or vacuum); however, the advantage of this technique is that
it eliminates any sensitivity to the flow measurement configuration.
Figure 3: Recommended Mounting Orientation of Blow-by Meter
How to Use 9