Toyota Hybrid System
Better fuel economy, lower costs, and high levels of comfort; these are what Toyota hybrid
technology has brought about since two decades ago.
Toyota Hybrid System includes a gasoline engine, an electric motor, a generator, a power split
device, a power control unit, as well as a battery pack. And, all units of the hybrid vehicle are
designed in accordance with the hybrid system. The Toyota hybrid system owes its efficiency to
the combination of engine, motor, and power split device.
Toyota Hybrid Vehicles Components & Functions
As for the engine, raising thermal efficiency has led to low fuel consumption, thus low emissions. With a compact and high efficiency-level motor, a trouble-free acceleration is achieved. Now, let’s take a look at the generator task. Generator produces electricity, using the engine rotation. The electricity is then sent to the motor and the drive batteries. The generator itself can play a role as the engine starter.
A look at the power split device shows that it enjoys a core technology that uses a special type of gearbox to distribute power from the engine easily.
And, what regulates the amount of the electricity of every unit is the power control unit. The hybrid vehicle uses the generated electricity stored in the drive batteries. The batteries are kept well-charged by the system, so there would be no need to recharge the batteries. There are two ways to charge the battery in Toyota hybrid systems. In the first method, the engine drives the generator to charge the battery. And the second way is through regenerative braking. It is noteworthy that drive batteries are heat resistant and durable enough.
Another feature of the Toyota hybrid vehicle is that all units stop working when the vehicle is not moving, hence no energy is wasted at all. And when the vehicle starts off it starts moving quietly.
The System And Various Driving Situations
The system lifts efficiency by transitioning between gasoline and electric power, according to the driving situations. In low-speed situations it uses a motor to consume fuel. During speed-up the driver enjoys a powerful vehicle with low fuel consumption, when motor drive is combined with engine drive in a rotation range with good engine efficiency.
In normal driving conditions, meanwhile, the engine charges the batteries while driving, to boost the energy efficiency. During slowdown, however, the motor generates electricity to store the power into the batteries for reuse