Qualification training MT Engine.pdf

Qualification training MT Engine section Month Day , 2024 FUSO Academy Internal technical training (TH/AAA) Masahiro Hosokawa Index 1 Welcome & Introduction 2 What is an engine? 3 Basic operation of a diesel engine 4 Basic structur...

Qualification training MT Engine section Month Day , 2024 FUSO Academy Internal technical training (TH/AAA) Masahiro Hosokawa Index 1 Welcome & Introduction 2 What is an engine? 3 Basic operation of a diesel engine 4 Basic structure of a diesel engine 5 Mitsubishi FUSO engine specifications Daimler Truck Qualification training SP-1 Engine Training| TH/AAA | Date 2 2. What is an Engine? Crank Mechanism Piston displacement (PD) = Total displacement = PD X # of cylinders 4P10 engine characteristics: Item Specifications Engine model 4P10 - T1 4P10 - T2 4P10 - T4 4P10 - T6 Type 4-cylinder, in-line, water-cooled, 4-cycle diesel engine Combustion chamber Direct injection type Valve mechanism Double Overhaed Camshaft (DOHC) 81 (110) 96 (130) 110 (150) 129 (175) Maximum output kW (PS)/rpm / 2970 - 3500 / 3050 - 3500 / 2840 - 3500 / 2860 - 3500 260 (26.5) 300 (20.6) 370 (37.7) 430 (43.8) Maximum torque N*m (kgf*m)/ rpm 1200 - 2970 1300 - 3050 1350 - 2840 1600 - 2860 Bore * Stroke mm 95.8 dia * 104 Total displacement 2998 (2.998) Compression ration 17.5 Daimler Truck Qualification training SP-1 Engine Training| TH/AAA | Date 3 2. What is an Engine? Engine Power and Torque Engine torque Daimler Truck Qualification training SP-1 Engine Training| TH/AAA | Date 4 2. What is an Engine? 4P10 Engine Characteristics: Item Specifications Engine model 4P10 - T1 4P10 - T2 4P10 - T4 4P10 - T6 81 (110) 96 (130) 110 (150) 129 (175) Maximum output kW (PS)/rpm / 2970 - 3500 / 3050 - 3500 / 2840 - 3500 / 2860 - 3500 260 (26.5) 300 (20.6) 370 (37.7) 430 (43.8) Maximum torque N*m kgf*m)/ rpm 1200 - 2970 1300 - 3050 1350 - 2840 1600 - 2860 Daimler Truck Qualification training SP-1 Engine Training| TH/AAA | Date 5 2. What is an Engine? Compression Ratio Calculation of compression ratio Combustion chamber volume Combustion chamber volume Compression Top dead center ratio ＝ ＋ ÷ Stroke Displacement Volume Bottom dead center Combustion Compression chamber volume Combustion ratio ＝ + ÷ chamber volume Displacement Daimler Truck Qualification training SP-1 Engine Training| TH/AAA | Date 6 2. What is an Engine? Daimler Truck Qualification training SP-1 Engine Training| TH/AAA | Date 7 2. What is an Engine? Compression Ratio 4D34T engine Combustion chamber volume Displacement Compression Combustion (per one cylinder) 976.4 cc ratio ＝ + ÷ chamber volume Displacement volume Combustion chamber volume 59.2 cc On diesel engines, the compression ratio is generally set to approximately 15 or higher to obtain temperature Compression ratio = (59.2 + 976.4) ÷ 59.2 enough to ignite diesel fuel. Compression ratio = 17.5 On gasoline engines, the compression ratio is generally set to approximately 10 or lower because the temperature must be kept lower than the ignition temperature of gasoline. Daimler Truck Qualification training SP-1 Engine Training| TH/AAA | Date 8 2. What is an Engine? Engine Layout Straight (in–line) type V-type Horizontally opposed type (“Boxer” engine) Daimler Truck Qualification training SP-1 Engine Training| TH/AAA | Date 9 Index 1 Welcome & Introduction 2 What is an engine? 3 Basic operation of a diesel engine 4 Basic structure of a diesel engine 5 Mitsubishi FUSO engine specifications Daimler AG Qualification training SP-1 Engine Training| TH/AAA | Date 10 3. Basic Operation of a Diesel Engine Combustion of Fuel in a Diesel Engine Top dead center (1) (2) (3) (4) Bottom dead center (1) Intake stroke (3) Combustion stroke (2) Compression stroke (4) Exhaust stroke For every stroke of the piston (one way between top dead center and bottom dead center), the crankshaft rotates 1/2 rotation (180°). As a combustion cycle consists of 4 strokes i.e. intake, compression, combustion and exhaust, the crankshaft turns 1/2 rotation (180°) × 4 = 2 rotations (720°). As one cycle of engine operation consists of 4 strokes, it is called as “4-stroke engine”. Daimler AG Qualification training SP-1 Engine Training| TH/AAA | Date 11 3. Basic Operation of a Diesel Engine Combustion of Fuel in a Diesel Engine Ideal diesel cycle Top dead center Top dead center 180° 180° 180° 180° Compression Intake Exhaust Combustion stroke stroke stroke stroke (2) (1) (4) (3) Bottom dead center Bottom dead center Crankshaft rotates 2 rotations (720°) in 4 strokes. Daimler AG Qualification training SP-1 Engine Training| TH/AAA | Date 12 3. Basic Operation of a Diesel Engine Difference in Combustion System Comparison of ignition point and flash point between diesel fuel and gasoline Ignition point (°C) Flash point (°C) Diesel Approximately 250°C or higher Approximately 50°C or higher Gasoline Approximately 300°C or higher Approximately -40°C or higher Summary of difference between ignition point and flash point Ignition point: The lowest temperature at which a substance ignites spontaneously (autoignition temperature). Flash point: The lowest temperature at which a substance can start combustion if ignited by an external ignition source. Daimler AG Qualification training SP-1 Engine Training| TH/AAA | Date 13 3. Basic Operation of a Diesel Engine Differences in Combustion Systems The diesel engine raises the temperature of diesel fuel In a gasoline engine, the start of combustion is controlled by over the ignition point by high compression. spark ignition. Daimler AG Qualification training SP-1 Engine Training| TH/AAA | Date 14 3. Basic Operation of a Diesel Engine Differences in Combustion Systems Combustion of fuel in a diesel engine (1) Compression (2) Fuel injection (3) Autoignition Click on video to being playing. Daimler AG Qualification training SP-1 Engine Training| TH/AAA | Date 15 3. Basic Operation of a Diesel Engine Firing order: Mitsubishi Fuso 4-cylinder engine