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The way they do this is during a deceleration of the vehicle when there is low absolute pressure in the intake manifold (i.e., a high vacuum present in the intake manifold relative to the outside air) the powertrain control module (PCM) will open the EGR valve and then monitor the MAP sensor's values. If the EGR is functioning properly, the ...
This low (or negative) pressure can be put to use. A pressure gauge measuring the manifold pressure can be fitted to give the driver an indication of how hard the engine is working and it can be used to achieve maximum momentary fuel efficiency by adjusting driving habits: minimizing manifold vacuum increases momentary efficiency [citation needed].
In most cases, only the left magneto is active (the right p-lead is grounded) due to timing differences between the magnetos at low RPMs. [1] Tachometer - A gauge to indicate engine speed in RPM or percentage of maximum. Manifold pressure (MP) gauge - Indicates the absolute pressure in the intake manifold. For an aircraft equipped with a ...
The gear type pump takes engine oil pressure and turns it to a higher pressure which is in turn controlled in an out of the propeller hub by the pilot valve, which is connected to the flyweights, and a seeder spring which presses against the flyweights. The tension of the spring is set by the propeller control lever, which sets the RPM.
The low-pressure oxidizer turbopump (LPOTP) is an axial-flow pump which operates at approximately 5,150 rpm driven by a six-stage turbine powered by high-pressure liquid oxygen from the high-pressure oxidizer turbopump (HPOTP). It boosts the liquid oxygen's pressure from 0.7 to 2.9 MPa (100 to 420 psi), with the flow from the LPOTP then being ...
These kinds of piston pumps are characterized by the following advantages: high efficiency; high pressure (up to 1,000 bar or 14000psi) low flow and pressure ripple (due to the small dead volume in the workspace of the pumping piston) low noise level; very high load at lowest speed due to the hydrostatically balanced parts possible
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