AUTOTECH Kerala

ENGINE COMPONENTS 1. CYLINDER BLOCK      The cylinder block is the main body of the engine. Cylinder head is mounted on the cylinder block. It houses iniet and exhaus valves. Crank case is attached to the bottom of the cylinder block. Crank case supports the crank shaft. Oil pan is attached to the bottom of the crank case. Cylinder block contains large cylindrical holes called cylinder bore. The cylinders are accurately finished to accommodate pistons. The space above the piston inside the cylinder at TDC called the combustion chamber. Combustion of fuel inside this space, high pressure and temperature will be developed inside the cylinder. Therefore, it should be made of material which can resist high pressure and temperature (2800°C). In water jackets has around the cylinders for the circulation cooling water to absorb the temperature while running of an engine. 2. CYLINDER HEAD Cylinder head is a separate casting placed on top of the cylinder block by studs and nuts. I...

AIM :  TO MAKE A STEP - JOINT TOOLS REQUIRED 1. STEEL RULE & SCRIBER 2. TRY SQUARE & DOT PUNCH 3. 8" BASTARD FLAT FILE 4. 6" SMOOTH FLAT FILE 5. 6" SMOOTH TRIANGULAR FILE 6. SAFE EDGE FILE 7. HACK SAW BLADE & FRAME 8. BALL PEEN HAMMER MATERIALS REQUIRED 1. 62 x 50 x 5 mm M. S. FLAT (2Nos.) 2. MARKING BLUE 3. COTTON WASTE PROCEDURE 1. CUT OFF THE WORK PIECES FROM THE GIVEN RAW MATERIAL BY USING A HACK SAW BLADE AND FRAME. ALSO MARK THE RAW MATERIAL AS THE DIMENSION OF 62mm. LENGTH. 2. THEN FILE ANY TWO MUTUAL SIDES PERPENDICULAR TO EACH OTHER BY USING A 12" BASTARD FLAT FILE. 3. THE PERPENDICULARITY IS CHECKED BY USING A TRY SQUARE. 4. AFTER FILING THE DATUM SIDES MARK THE WORK PIECES AS PER THE GIVEN DRAWING BY USING A VERNIER HEIGHT GAUGE. ALSO APPLY THE MARKING BLUE IN TO THE SURFACE OF WORK PIECE FOR BETTER CLARITY. 5. THEN PUNCH THE MARKED LINES WITH THE HELP OF A PRICK PUNCH AND BALL PEEN HAMMER. 6. THEN REMOVE THE UNWANTED AREA OF WORK ...

AIM :  TO MAKE A SQUARE TOOLS REQUIRED: 1. STEEL RULE 2. SCRIBER, DOT PUNCH 3. HACK SAW BLADE AND FRAME 4. BALL PEEN HAMMER 5. TRY SQUARE 6. 12" BASTARD FLAT FILE 7. 6" SMOOTH FLAT FILE MATERIALS REQUIRED 1. 50 x 50 x 6 M. S. FLAT 2. MARKING BLUE 3. CLEANING BRUSH PROCEDURE: 1. INITIALLY CUT OFF THE WORK PIECE FROM RAW MATERIAL BY USING A HACK SAW FRAME AND A BLADE. THE MARKING IS DONE BY A SCRIBER AND STEEL RULE. 2. THEN DEBURR ALL THE EDGES BY USING A FILE. 3. AFTER DEBURRING HOLD THE JOB ON THE BENCH VICE TIGHTLY. 4. THEN FILE ANY ONE EDGE TO BECOME FLAT. IT IS CHEECKED BY USING A TRY SQUARE. ALSO THE FILING IS DONE BY BOTH 6" AND 12" FLAT FILES. 5. THEN FILE THE ADJACENT SIDE MUTUALLY PERPENDICULAR TO EACH OTHER BY USING 12" BASTARD FLAT FILE. THE PERPENDICULARITY WAS CHECKED BY A TRY SQUARE. 6. AFTER COMPLETING THE DATUM SIDES, MARK THE LENGTH AND HEIGHT OF 45mm. BY USING A VERNIER HEIGHT GAUGE. ALSO APPLY THE MARKING BLUE INTO THE SURFACES OF ...

  AIM :  CUTTING PRACTICE. TOOLS REQUIRED :                                                                      1. STEEL RULE       2. SCRIBER       3. PRICK PUNCH       4. TRY SQUARE     5. HACK SAW BLADE AND FRAME     6. 12'' BASTARD FLAT FILE     7. 6'' SMOOTH FLAT FILE     8. BALL PEEN HAMMER MATERIALS REQUIRED  1. 52 X 48 X 6 M.S. FLAT  2. MARKING BLUE  3. CLEANING BRUSH PROCEDURE :     1. CUT THE WORK PIECE FROM GIVEN RAW MATERIAL AS PER THE SIZE OF 52 x 48 x 6mm.     2. FILE ANY TWO ADJACENT SIDES MUTUALLY PERPENDICULAR TO EACH OTHER, BY USING A 12'' BASTARD FLAT FILE. ALSO CHECK THE PERPENDICULARITY BY USING A TRY SQUARE.     3. THEN MARK...

AIM:    TO MAKE A 'V' - JOINT AT THE ANGLE OF 90° TOOLS REQUIRED 1. HACK SAW BLADE & FRAME 2. TRY SQUARE & STEEL RULE 3. DOT PUNCH & BALL PEEN HAMMER 4. SAFE EDGE FILE 5. 10" SECOND CUT FLAT FILE 6. 6" SMOOTH FLAT FILE 7. 6" SMOOTH TRIANGLE FILE MATERIALS REQUIRED 1. 50 x 50 x 5 M.S. FLAT - 02 Nos. 2. MARKING BLUE 3. CLEANING BRUSH PROCEDURE 1. CUT OFF THE JOB FROM THE GIVEN RAW MATERIAL AS THE SIZE OF 50mm SQUARE (2 Nos.) BY USING A HACK SAW BLADE AND FRAME. THE MARKING IS DONE BY A STEEL RULE AND SCRIBER. 2. HOLD THE WORK PIECE TIGHTLY INTO THE BENCH VICE 3. INITIALLY FILE THE DATUM SIDES OF BOTH WORK PIECES WITH THE HELP OF 10" SECOND CUT FLAT FILE. 4. THEN MARK THE HEIGHT AND LENGTH OF 45mm BY USING A VERNIER HEIGHT GAUGE. THEN PUNCH THE MARKED LINES WITH THE HELP OF A PRICK PUNCH AND HAMMER. 5. AFTER MARKING, FILE THE WORK PIECE TO A SQARE OF 45mm SIDE. MAKE SURE THAT ALL THE SIDES ARE MUTUALLY PERPENDICULAR TO EACH OTHER. 6. AFT...

FOUR STROKE PETROL ENGINE MAIN PARTS 1. PISTON 2. CYLINDER 3. CONNECTING ROD 4. INLET VALVE 5. EXHAUST VALVE 6. SPARK PLUG 7. CRANK SHAFT 8. FLY WHEEL 9. CAM SHAFT CONSTRUCTION A four stroke petrol engine have a piston, connecting rod, crank shaft, inlet valve, exhaust valve and a spark plug. The connecting rod is used to connect the piston and crank shaft. The spark plug and valves are mounted in the cylinder head. Also the valves are operated by cam shaft which is connected to the crank. In this type of engines, there would be a power stroke for every two rotations of crank shaft. It is also known as otto cycle. Each full rotation of crank having two strokes. So one stroke is  180° rotation of flywheel. A four stroke petrol engine having the following strokes. WORKING Induction stroke : The crankshaft moves the piston downwards (TDC to BDC). The inlet valve is open and a mixture of fuel and air is sucked into the combustion chamber. It is also known suction stroke. In this strok...