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Few things About Engine

Date post:12-Jul-2015
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Few ThingsAboutAutomobile Engines By:- Prakash Shakti

Cut way Model of Diesel Engine And Transmission Gearbox

phenomena of Heating in vehicles.

Rudolf DieselDiesel Engine

For thisinline-4engine, 1-3-4-2 could be a valid firing order.

In Compression stroke1.Piston move from BDC to TDC2.Inlet valve closes3.Crankshaft rotate from 180 to 360 degree4.Fresh air fuel mixture compressed in cylinder

In suction stroke1. Piston move from TDC to BDC2.Crankshaft rotate from 0 to 180 degree3. Intake valve open4. Fresh air fuel mixture enter in cylinder

In exhaust stroke1. Piston moves from BDC to TDC2. Exhaust valve open3. Crankshaft rotate from 540(180) to 720(360)4. Exhaust gases go out from cylinderIn power stroke1. At the end of compression stroke spark plug fire2. Air fuel mixture ignites in cylinder which causes an explosion and power produces3. Power push the piston down from TDC to BDC4. Crankshaft rotate from 360(0) to 540(180) degree.

Nicolaus Otto

intake compressionpower exhaust Otto cycle Petrol Engine

Which is the major axis and minor axis on an automobile piston ? Why ?

In a wet sump, the oil that you put into the engine is stored beneath the crankshaft in the oil pan. This pan has to be large and deep enough to hold the lube oil sufficient quantity. In a wet sump, the oil pump sucks oil from the bottom ofthe oil pan through a tube, and then pumps it to the rest of the engine.In a dry sump, extra oil is stored in a tank outside the engine rather than in the oil pan. There are at least two oil pumps in a dry sump -- one pulls oil from the sump and sends it to the tank, and the other takes oil from the tank and sends it to lubricate the engine. The minimum amount of oil possible remains in the engine.Dry sump systems have several important advantages over wet sumps:1. Because a dry sump does not need to have an oil pan big enough to hold the oil under the engine, the main mass of the engine can be placed lower in the vehicle. This helps lower the center of gravity and can also help aerodynamics.2. The oil capacity of a dry sump can be as big as you want. The tank holding the oil can be placed anywhere on the vehicle.3. In a wet sump, turning, braking and acceleration can cause the oil to pool on one side of the engine. This sloshing can dip the crankshaft into the oil as it turns or uncover the pump's pick-up tube.4. Excess oil around the crankshaft in a wet sump can get on the shaft and cut horsepower. Some people claim improvements of as much as 15 horsepower by switching to a dry sump.The disadvantage of the dry sump is the increased weight, complexity and cost from the extra pump and the tank -- but that's a small price to pay for such big benefits.Wet Sump Oil System & Dry Sum Oil Pump


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