Topic hybrid engines use fuel efficiently and reduce pollutant emissions

DANANG UNIVERSITY OF SCIENCE AND TECHNOLOGY FACULTY OF TRANSPORTATION MECHANICAL ENGINEERING INTERNSHIP REPORT ENGLISH WRITING AND ORAL PRESENTATION TOPIC HYBRID ENGINES USE FUEL EFFICIENTLY AND REDUCE POLLUTANT EMISSIONS Group 8: Võ Nguyễn Duy An Võ Hoài Bảo Nguyễn Hoàng Ý Nguyễn Hoài Anh Võ Ngọc Chiến CONTENTS  I OVERVIEW OF HYBRID CARS II THE MAIN PARTS OF THE HYBRID III OPERATING PRINCIPLE IV ADVANTAGES AND DISADVANTAGES OF HYBRID VEHICLES V CURRENT STATUS, ANALYSIS AND SOLUTIONS I OVERVIEW OF THE HYBRID CAR CONCEPT: A hybrid car is a vehicle that uses a combination engine, which is combined with a conventional energy-powered engine (gasoline, Diesel ) with an electric motor that draws electrical energy from a high-voltage battery I OVERVIEW OF THE HYBRID CAR History was born Appearing since the early 1990s and up to now, hybrid cars have always been researched and developed as an effective solution in terms of economy and environment I OVERVIEW OF THE HYBRID CAR development trends Diesel, gasoline or other fuels are flooding the market, polluting the environment, worsening the atmosphere, changing the ecosystem II THE MAIN PARTS OF THE HYBRID General model of hybrid cars II THE MAIN PARTS OF THE HYBRID 1.Transmission and power distributor (Hybrid Transaxle) IC Engine Motor generator (MG1) Motor generator (MG2) 4.Planetary gear set Inverter HV Battery HV ECU: Hybrid Vehicle ECU II THE MAIN PARTS OF THE HYBRID Inverter with Converter The converter converts direct current from the high voltage battery (HV Batterry) into alternating current, turning the electric motor or alternating current from the generator into direct current to charge the battery II THE MAIN PARTS OF THE HYBRID High voltage battery (HV Battery - High Volt Battery) The vehicle's primary battery is protected in a nickel-metalhydride casing that is sturdier and has a higher energy density than normal II THE MAIN PARTS OF THE HYBRID Power cable The power cable or power cable in a hybrid vehicle is used to transmit high-intensity and high-voltage current between devices such as high-voltage batteries, converters, MG1, MG2 assemblies and compressors in the air conditioning system II THE MAIN PARTS OF THE HYBRID Secondary battery This type of DC12V battery is fixed behind the vehicle, maintaining and providing stable direct current for devices such as vehicle lights, audio systems, control ECUs, etc II THE MAIN PARTS OF THE HYBRID Other parts with supporting uses on hybrids Low drag coefficient aerodynamics Automatic interruption of petrol engine Stepless variable gearbox Cylinder Control ControlSystem Emission Line Optimization Small Friction Plunger Intake Air Flow Variation Technology Using advanced materials III OPERATING PRINCIPLE Start the engine while the vehicle is running If the required driving torque is increased when the vehicle is running with only MG2, MG1 will be activated to start the engine III OPERATING PRINCIPLE Slight acceleration with motor When the vehicle is switched from low load mode to high acceleration mode, this system adds the HV battery's electrical charge to the driving force of MG2 III OPERATING PRINCIPLE Stable low speed When the vehicle is running at low load, the planetary transmitter divides the engine power into two parts One transmits to the active wheels, the other pulls MG1 to generate power to the converter that supplies MG2 with additional power to the active wheels IV ADVANTAGES AND DISADVANTAGES OF HYBRIDS CAR 4.1 Advantages of hybrids car: - Fuel Economy - Reduce emissions: With advanced technology, hybrid vehicles reduce emissions, helping to protect the environment - Smooth and safe driving - Good acceleration IV ADVANTAGES AND DISADVANTAGES OF HYBRIDS CAR 4.2 Disadvantages of hybrids car - Hybrids are usually more expensive than conventional vehicles - Heavy weight- due to being equipped with extra batteries and electric motor booster - Long battery charging time compared to fuel filling V CURRENT STATUS, ANALYSIS AND SOLUTIONS Hybrid cars are vehicles that use both an internal combustion engine and an electric motor to reduce emissions and save fuel Currently, hybrid cars are becoming a trend in the automotive industry V CURRENT STATUS, ANALYSIS AND SOLUTIONS Analysis: Advantages: Hybrid cars save fuel, reduce emissions, have the ability to regenerate energy, reduce noise, and have the ability to accelerate faster than conventional cars V CURRENT STATUS, ANALYSIS AND SOLUTIONS Analysis: Disadvantages: Higher cost than conventional cars, requires time to recharge the battery, not suitable for long-distance trips