The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Indicated Power

(of an engine), the useful work performed by the gases in the cylinder of a piston engine per unit time; it is determined by the analysis of indicator cards made during engine tests.

The indicated power of a given engine is different under different operating conditions. The relation of indicated power to the frequency of revolution is called the speed characteristic. Indicator cards are read at various frequencies of revolution in order to plot the speed characteristic of the indicated power. The indicated power at a given frequency of revolution is determined by measuring the areas of the cards. The indicated power is partially consumed in overcoming the frictional forces within the engine and setting the auxiliary mechanisms in motion. The indicated power may be defined as the sum of the power produced at the crankshaft (actual horsepower) and the power consumed by losses (friction horsepower).

References in periodicals archive

Based on the experimental results of this study, the following conclusions can be drawn from all the above graphs, it is clear that the values of total fuel consumption specific fuel consumption, indicated power, heat supplied and the efficiencies varies upon the depending load conditions.

Experimental investigations on the effects of aluminium oxide nanoparticles on biodiesel

The fact that the indicated power output rate was nearly constant in Wilkie's (22) experiment supports that possibility.

The mechanical energy-generation basis and evident neural restriction of muscles' core power-rates and ensuing force levels

Thus, it was set that priority factors are considered and can destabilize the size of the indicated power. Research of possibility of support of values of the indicated factors at certain level during all term of exploitation showed that for the first from them implementation of such requirement was arrived at difficult and expensive, and adjusting of effort of pinning of large plunger to the wall of corps in general is not envisaged in a construction.

Construction and practical application of hybrid statistically-determined models of multistage mechanical systems/Hibridiniu statistiskai apibreztu modeliu daugiapakopese mechaninese sistemose kurimas ir praktinis taikymas

The indicated power and the electric power consumption are still larger than those for the reference case (no oil atomization).

A slight variation is seen in the indicated power and COP with respect to the nozzle position.

Cooling of a reciprocating compressor through oil atomization in the cylinder

Indicated thermal efficiency ([[eta].sub.ith]) is the ratio of energy (E) in the indicated power (ip) to the input fuel energy.

Study of fuel injection pressure effect on performance and fuel consumption of diesel engine based on load and engine speed

Note that the differential indicated power (DIP) above and below toe pressures is consistent with very large valve losses, or perhaps nozzle orifice losses.

Re-evaluating pulsation bottle design can boost efficiency; new predictive capabilities help engineers optimize integral compressors

The effect of indicated power with percentage of loading is shown in the fig.2.

Experimental investigation of NOx emission on a single cylinder diesel engine using low pressure steam injection

The ratio of the experimental shaft power, [L.sub.s], to the indicated power is the mechanical efficiency, [[eta].sub.m]:

Performance of vane-type [CO.sub.2] expander and characteristics of transcritical expansion process

If the engine speed is n rps the the Total Indicated power from the engine is given by [IP.sub.total] = W*n (21)

Ideal thermodynamic analysis of Stirling engine using Schmidt analysis