TOYOTA PRIUS HYBRID SYNERGY DRIVE:HOW PRIUS OPERATES

Written by gary on June 21st, 2009
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In 2004 the all new second generation Toyota Prius with Hybrid Synergy Drive (HSD) was introduced and quickly became the Rolling Hybrid Icon with the Golden Reputation for environmental technology and the car with outstanding real-world fuel efficiency. 

So what is this Prius (HSD) Hybrid Synergy Drive all about and how does it operate Prius? First the (HSD) system is made up of the following components:

  • 1.8 Liter Dual-Overhead Cam Engine, runs at low temperatures and low RPMs for high reliability and fuel efficiency.
  • Hybrid Battery, reliable nickel-metal hydride (Ni-MH) that has proven performance.
  • Inverter/Converter Assembly, boosts hybrid battery voltage from 201.6 to 650 volts AC to drive thr motor/generator; inverter constantly calculates power output and boosts voltages to the powertrain
  • Motor Generator 1, System generator that recharges the battery and powers Motor Generator 2 when demand requires it.
  • Motor Generator 2, Drives Prius and provides regeneration voltage on deceleration and braking, thus capturing energy and returning it to the battery.

The Toyota Prius is a true Split Series-Parallel Hybrid (full hybrid). This means that Prius can drive on electric-only power during a driver’s commute. Many Prius hybrid competitors cannot do this.

Below is a visual layout showing how these components of Prius Hybrid Synergy Drive work systematically to operate Prius and produce the remarkable performance that this car achieves. The layout below is also very much like the dash display that a driver can monitor inside the car while driving Prius:

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