- Online steam engine workdone calculator full#
- Online steam engine workdone calculator free#
– Compression pressure is very normal but the maximum firing pressure is too high compared to the normal diagram. Remove the hook, turn the drum by hand to a place clear form for the power diagram, take compression pressure line with the fuel cut off.Īfter taking indicator cards from all the cylinders, open the instrument and clean all the parts, and lubricate the same.
make sure that the instrument is not exposed to high temperature for long time. Open the indicator cock and lightly press the stylus against the paper and make vertical lines as the piston moves up and down, when you are ready to pull the roller string, make sure it is in the bottom and pull the string till the cycle is described. Take the atmospheric line with the cock shut. fasten the instrument to the cock so that the cord is taut. Before connecting the instrument to the Indicator cock, open indicator cock, allow two or three firing strokes, to blow out soot and combustion residues in the cock. Stretch diagram paper firmly over the drum. Use proper tools supplied with the instrument to open and close the cocks. Take proper PPE protections like gloves, goggles, safety shoes and proper outfit. Measurement of the maximum rate of pressure rise following initial combustion. – Measurement of the compression pressure Fouling of exhaust or scavenge gas flows. Measurement of the point of fuel ignition. Measurement of the compression pressure. Indicates after burning present when card shape enlarged during the expansion stroke. 
Cylinder power, calculated from the area within the P~V diagram. There are five types of indicator cards, which can provide the following information: The taking of indicator cards, allows the engineer to receive more information about the combustion process (via the draw or out of phase card), measure the cylinder power output of the engine (via the power cards), and check the cleanliness of the scavenging process (via the light spring diagram). In that case the compression and expansion diagrams with the fuel cut off should coincide. It then represents the travel of the power piston. Online steam engine workdone calculator free#
Play in the pencil mechanism will distort he diagram.Ĥ) The cock should be free from accumulation of soot and oil.ĥ) The stylus should be adjusted to a light writing pressure.Ħ) The drum when actuated the motion of the power piston by a cam should be correctly position. The bottom of the cylinder is closed and the piston should be held in its position.ģ) The drum should not hit the stop at end position. This is done by dismantling the piston and allowing it to drop slowly through the cylinder by its own weight.
ADDITIONAL INFORMATION TO BE COLLECTED FOR CLEAR JUDGEMENTħ) JCW outlet temp, piston cooling oil, cooling water outlet temp.ĩ) Turbocharger R.P.M / exhaust gas back pressure.ġ1) Air filter temp of air before filter.ġ2) Fuel consumption (Flow meter reading before and after on a time bound), cylinder oil consumption.ġ) To reduce effect of friction the indicator card piston is removed, the piston and the cylinder is cleaned and lubricated.Ģ) The tightness of the indicator piston in the cylinder is checked. Ship may be under exploited or overloaded…all these condition the diagram will be deceiving.
Online steam engine workdone calculator full#
If the ship is lightly laden with the propeller partly immersed or if the ship is running with a favour of wind or sea the engine does not develop its full power than normal at same speed.
Compression pressure is low, and the peak pressure is also too lowĢ) The ship is fully laden at an even keel.ģ) The ship is running neither with nor against a head wind or heavy sea.Ĥ) The hull is not fouled by an under growth. 
ADDITIONAL INFORMATION TO BE COLLECTED FOR CLEAR JUDGEMENT.Indicator Diagrams, Power card, Draw card, Power calculation.
0 kommentar(er)
