1) Starting with the piston at top dead center (TDC 0 degrees) ignition has occurred and the gasses in the combustion chamber are expanding and pushing down the piston. This pressurizes the crankcase causing the reed valve to close. At about 90 degrees after TDC the exhaust port opens ending the power stroke. A pressure wave of hot expanding gasses flows down the exhaust pipe. The blow-down phase has started and will end when the transfer ports open.
Located within your engine’s cylinder head, your spark plug ignites and causes a small explosion of air fuel which brings your car to life. It’s a complicated process to comprehend, but it happens a couple of thousand times per minute, so you need a spark plug that is capable of withstanding a great deal of pressure. Failure
consists of a light aluminium piston which moves in a quadrant shaped air chamber which is closed ae one end. The clearance between chamber wall and piston is uniform and very small. Thepiston is mounted on the spindle of the moving system. Now, with the motion, the piston displaces air and thereby a damping force is created on the piston that produces a torque on the spindle. When the movement is quick the damping force is greater, when the spindle is at rest, the damping force is zero.
The plug design integrates with its wall socket (and the socket’s grounding pin) during use. It is inserted into a socket and acts together with the grounding pin in the wall to establish an electrical ground. Once fully inserted, a 230V 50Hz current is delivered to the
Any movement is prevented by a holdback bar. Valves are then opened which release steam into the cylinders, pushing both pistons and propelling the aircraft and shuttle assembly along the track. The hold back bar is disengaged when the steam valves are opened. The aircraft reaches its take-off speed in a much shorter distance due to the force exerted by the catapult. Once the aircraft has taken-off and the piston moved past a steam pressure switch, the steam valves are closed and exhausts
The fuel source can be anything that is flammable, such as wood, paper, fabric, or chemicals. The extinguisher use: Wet Chemical is a new element that extinguishes the fire by removing the heat of the fire and prevents re-ignition by creating a barrier between the oxygen and fuel elements. Once the fuel element of the fire is removed, the fire will go
With an in-line crank slider, the motion of the crank and follower links is symmetric about the sliding axis. This means that the crank angle required to execute a forward stroke is equivalent to the angle required to perform a reverse stroke. For this reason, the in-line slider-crank mechanism produces balanced motion. This balanced motion implies other ideas as well. Assuming the crank arm is driven at a constant velocity, the time it takes to perform a forward stroke is equal to the time it takes to perform a reverse
Electricity from the battery goes to a coil that produces owner. Some vehicles have two coils, and these coils can deteriorate. Spark plug wires can also wear out or accumulate a deposit of carbon, which reduces engine efficiency. Generally, consider having copper spark plugs inspected and repaired around 30,000 miles while those built with better material like Iridium can last up to 10,000 miles. • Windshield wipers: This may seem trivial, but it is as significant as checking other internal parts.
(1) ________________________________________________________________________________________________________________________________ 4. Complete the table below (3) a) Put a tick ( ) in the correct column. b) Explain why by referring to the shape of the material Material Solid Liquid Gas Explanation or Reason Plastic rule Steam from a kettle Paraffin Do some research to find out why cooking gas is kept in a pressurized gas cylinder? (2)
Cranckshaft:- it is the heart and the main part of motor engine which response on deliver the motion from motor to drive system which happen because the effective combustion process Cranckshaft is contain parts to help motor in its motion and working on save the balancing the rotating motion of cranckshaft those parts are :- 1-oil bores: its mission is to deliver the lubricant liquid to every part in cranckshaft 2-balance bores: to balancing the mass of Cranckshaft to avoid any vibration 3-cranck pin 4-shaft journal 5-counter weight: to balancing masses Also cranckshaft is using to control some operation in engine like cooling and lubricant by connecting it to devices and controlling their motion by belts. Cranckshaft can be made of two