Lets take sometime of the suspension update and look at the Hybrid Electric Vehicles (HEV), i know some of us already have them while some intend to buy one once the funds are available, There is nothing wrong in understanding the technology behind the Machine you drive or intend to drive The idea behind the hybrid electrical vehicles (HEV): To Overcome the Disadvantage of Pure electrical (EV) and Conventional Vehicles by achieving a balance between environmental performance and driving experience as an environment-friendly and a passenger vehicle. That’s a more efficient vehicle in terms of Environmental friendliness, Performance and comfort, in other words the primary goal of using a hybrid drivetrain is saving energy Technology: The hybrid electric vehicle combine gas/petrol engines and electrically powered motors in different ways to deliver the most efficient vehicle for now Types of hybrid systems Series Hybrid System: The petrol engine turns the generator. Electric power thus produced is fed to the electric motor that drives the wheels. The power flows to the wheels in series. In other words, power from the petrol engine to the electric motor is connected in series, hence the name Series Hybrid System. Parallel Hybrid System: The wheels are driven by the petrol engine and the electric motor. The power source is selected according to the driving conditions. The name of the system comes from the fact that the power sources run in parallel. The petrol engine is the primary power source. The electric motor is used to supplement power during acceleration. However, the electric motor cannot be used to power the car while it is generating electricity Series/Parallel Hybrid System: With the Series Parallel Hybrid System, it is possible to drive the wheels using the dual sources of power (electric motors and/or gas/petrol engine), as well as to generate electricity while running on the electric motors. The system runs the car on power from the electric motors only, or by using both the gas/petrol engine and the electric motors together, depending on the driving conditions. Since the generator is integrated into the system, the battery can be charged while the car is running. Which of these hybrid system s do you drive or intend to drive??? At start off: Hybrid vehicles use only the electric motors, powered by the battery at START-OFF, it takes advantage of the electric motors low-speed torque, while the gas/petrol engine remains shut off. Due to the fact that gas/petrol engine cannot produce high torque in the low rpm range, whereas electric motors can delivering a very responsive and smooth start. Energy-efficient motor-driven running at low speed range: A gas/petrol engine is not energy efficient in running a vehicle in the LOW SPEED RANGE. On the other hand, electric motors are energy efficient in running a vehicle in the low-speed range. Therefore, hybrid vehicles use the electric energy stored in its battery to run the vehicle on the electric motors in low-speed range. *If the battery charge level is low, the gas/petrol engine is used to turn the generator to supply power to the electric motors Cruising Energy-efficient driving, using the gas/petrol engine as the main power source: hybrid vehicles use the gas/petrol engine in the speed range in which it operates with good energy efficiency. The power produced by the gas/petrol engine is used to drive the wheels directly, and depending on the driving conditions, part of the power is distributed to the generator. Power produced by the generator is used to feed the electric motors, to supplement the gas/petrol engine. By making use of the engine/motor dual powertrain, the energy produced by the gas/petrol engine is transferred to the road surface with minimal loss. *If the battery charge level is low, the power output from the gas/petrol engine is increased to increase the amount of electricity generated to recharge the battery. Cruising /Recharging Recharging the battery with surplus energy: Since hybrid vehicles operate the gas/petrol engine in its high efficiency range, the gas/petrol engine may produce more power than is necessary to drive the vehicle. In this case, the surplus power is converted to electric energy by the generator to be stored in the battery. Full Acceleration Dual power for acceleration one class higher: When strong acceleration is called for (e.g, for climbing a steep slope or overtaking) the power from the battery is supplied to the electric motors to supplement driving power. By combining the power from the gas/petrol engine and the electric motors, hybrid vehicles deliver power comparable to vehicles having one class larger engine displacement of one class higher Deceleration /Regenerating Energy Storing regenerated energy under deceleration in the battery: Under braking or when the accelerator is lifted, hybrid vehicles use the kinetic energy of the car to let the wheels turn the electric motors, which function as regenerators. Energy that is normally lost as friction heat under deceleration is converted into electrical energy, which is recovered in the battery to be reused later. At Rest Shutting down entire powertrain when the car is at rest: The gas/petrol engine, the electric motors and the generator are automatically shut down when the car comes to rest. No energy is wasted by idling. *If the battery charge level is low, the gas/petrol engine is kept running to recharge it. In some cases, the gas/petrol engine may be turned on in conjunction with the air-conditioner switch operation Watch this https://youtube/watch?feature=player_detailpage&v=1in_HhMofrI
Posted on: Mon, 24 Nov 2014 06:59:53 +0000
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