06-27-2006, 08:19 PM
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2007 Toyota Camry Hybrid
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Hybrids: 2007 Camry Hybrid
Posts: 313
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Re: TCH Regenerative Braking Tech
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Originally Posted by Douglas
My point is that the action of pressing on the brake pedal does not cause regen to occur in the Toyota HSD system. It is the action of removing pressure from the accellerator/gas pedal. Unlike other hybrid cars where the brake pedal does indeed cause regen.
Cheers, Doug
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I'm sorry, but you are wrong. Taking your foot off the gas merely initiates a battery recharge based on the drag of the engine. And then pressing the brake pedal initiates full brake regen and then actual brake application to the brake disks. Here is a Toyota link:
http://72.14.205.104/search?q=cache:...&ct=clnk&cd=26
Quote:
Regenerative Braking System
A regenerative braking system is used which, during engine braking and braking using the foot brake, operates the electric
motor as a generator, converting the vehicle’s kinetic energy into electrical energy, which is used to charge the battery. The
system is particularly effective in recovering energy during city driving, where driving patterns of repeated acceleration and
deceleration are common. When the footbrake is being used, the system controls the coordination between the hydraulic brake
of the ECB and the regenerative brake and preferentially uses the regenerative brake, thereby recovering energy even at lower
vehicle speeds. Furthermore, by improving the battery input performance, more energy is recovered.
Additionally, by reducing the friction loss in the drive system, such as in the transmission, the energy that used to be lost as
driving system loss during deceleration is now recovered, significantly increasing the total amount of recovered energy.
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