Comments on: Should the Volt Have a Free-Wheel Glide Pedal Position? http://gm-volt.com/2008/05/08/should-the-volt-have-a-free-wheel-glide-pedal-position/ Real-time news, information, and discussion about the Chevrolet Volt. Fri, 25 May 2012 07:21:17 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: does putting the prius shift in the b position recuperate more energy to the batteries than use of t http://gm-volt.com/2008/05/08/should-the-volt-have-a-free-wheel-glide-pedal-position/#comment-43952 does putting the prius shift in the b position recuperate more energy to the batteries than use of t Wed, 04 Jun 2008 06:29:03 +0000 http://gm-volt.com/?p=1041#comment-43952 [...] time - I just put the car in ..... These were brand new trucks that didn??t require more than a ...http://gm-volt.com/2008/05/08/should-the-volt-have-a-free-wheel-glide-pedal-position/WikiAnswers - Toyota Prius QuestionsDoes putting the prius shift in the B position recuperate more [...] [...] time – I just put the car in ….. These were brand new trucks that didn??t require more than a …http://gm-volt.com/2008/05/08/should-the-volt-have-a-free-wheel-glide-pedal-position/WikiAnswers – Toyota Prius QuestionsDoes putting the prius shift in the B position recuperate more [...]

]]> By: Jonathan Cassidy http://gm-volt.com/2008/05/08/should-the-volt-have-a-free-wheel-glide-pedal-position/#comment-40930 Jonathan Cassidy Thu, 15 May 2008 16:14:07 +0000 http://gm-volt.com/?p=1041#comment-40930 The PnG and the glide point on a Prius is much more complex yet easy to use than is made of here. I own an 06 Prius. I use this all the time. Much of the time I am not conscious of it. I do feel it. There is a surge when the dynamic generator comes off and you enter free wheel. It is not a big surge, but noticable since this car is so quiet. The glide point, gap between power on and dynamic generator on, changes with different speeds. It disappears, for the most part, above 40 mph. The gap is larger at low speeds and gets progressively smaller. This can be used on clear roads, light traffic and heavy traffic. It is fun to play with. You do not need to be watching the graph to do it, though this is of help when first trying it out. In heavy traffic glide is of use to smooth and calm your driving. PLEASE DO NOT CRITICIZE THIS WITHOUT TRYING IT. Glide on a Prius, and eventually the Volt, will be just a spot on the accelerator pedal between power on and generator on. High end attention drivers will use it to great advantage, all others will use it without thinking or effort. If you do ever own a Prius or Volt. Take some time as a passenger and look at the display. You will see at times, on the Prius, the Energy Monitor shows no energy moving. This is the spot. On a Prius if the ICE is off then this is actually free wheeling better than any other previous free wheeling situation. I know these things I use it to the max for my situation, yet I never PnG. I put on over 20,000 m/yr. Jonathan Cassidy, associate broker Prudential Manor Homes, REATORS jcassidy@prudentialmanor.com The PnG and the glide point on a Prius is much more complex yet easy to use than is made of here.

I own an 06 Prius. I use this all the time. Much of the time I am not conscious of it. I do feel it. There is a surge when the dynamic generator comes off and you enter free wheel. It is not a big surge, but noticable since this car is so quiet.

The glide point, gap between power on and dynamic generator on, changes with different speeds. It disappears, for the most part, above 40 mph. The gap is larger at low speeds and gets progressively smaller.

This can be used on clear roads, light traffic and heavy traffic. It is fun to play with. You do not need to be watching the graph to do it, though this is of help when first trying it out. In heavy traffic glide is of use to smooth and calm your driving.

PLEASE DO NOT CRITICIZE THIS WITHOUT TRYING IT. Glide on a Prius, and eventually the Volt, will be just a spot on the accelerator pedal between power on and generator on. High end attention drivers will use it to great advantage, all others will use it without thinking or effort. If you do ever own a Prius or Volt. Take some time as a passenger and look at the display. You will see at times, on the Prius, the Energy Monitor shows no energy moving. This is the spot.

On a Prius if the ICE is off then this is actually free wheeling better than any other previous free wheeling situation.

I know these things I use it to the max for my situation, yet I never PnG.

I put on over 20,000 m/yr.

Jonathan Cassidy, associate broker
Prudential Manor Homes, REATORS
jcassidy@prudentialmanor.com

]]> By: David http://gm-volt.com/2008/05/08/should-the-volt-have-a-free-wheel-glide-pedal-position/#comment-40883 David Thu, 15 May 2008 13:48:05 +0000 http://gm-volt.com/?p=1041#comment-40883 This might be good. Sounds like what my gasser does with the added bonus of not using any energy. What I'd like to know is, will the glide part be regenerative? This might be good. Sounds like what my gasser does with the added bonus of not using any energy.

What I’d like to know is, will the glide part be regenerative?

]]> By: Randy http://gm-volt.com/2008/05/08/should-the-volt-have-a-free-wheel-glide-pedal-position/#comment-40523 Randy Tue, 13 May 2008 19:57:22 +0000 http://gm-volt.com/?p=1041#comment-40523 I drive a Prius, the last 5 miles home are on a gentle slope, I would estimate less than 1%. I drive "normal" or use cruise control I get mileage of about 55 mpg. If I use PnG I average 99 mpg on the last 5 miles. My speed does not vary by more than 2mph, Same as with Cruise or not watching my pressure on the accelarator, It takes a very light touch on the pedal to get the proper feel for PnG. I drive a Prius, the last 5 miles home are on a gentle slope, I would estimate less than 1%. I drive “normal” or use cruise control I get mileage of about 55 mpg. If I use PnG I average 99 mpg on the last 5 miles. My speed does not vary by more than 2mph, Same as with Cruise or not watching my pressure on the accelarator, It takes a very light touch on the pedal to get the proper feel for PnG.

]]> By: Rob http://gm-volt.com/2008/05/08/should-the-volt-have-a-free-wheel-glide-pedal-position/#comment-40395 Rob Tue, 13 May 2008 02:18:56 +0000 http://gm-volt.com/?p=1041#comment-40395 Pulse & glide is a way to maximize the efficiency of a internal combustion gasoline engine, which makes it's best brake-specific-fuel-consumption at about 5/8ths throttle. You pulse at that throttle opening to accelerate the car in the engine's most efficient load area, then glide down until you're about to be rear ended. Lather, rinse, repeat. This is going to be completely irrelevant in the Volt, because the ICE isn't connected to the wheels. The pulse & glide of the ICE (if the GM engineers to their job of minimizing fuel consumption) will be built into the control software for the ICE. Ok, some clever people will probably figure out at what load & rpm the electric motor is most efficient and then try to keep it's operation in that range to maximize miles/kWh, but it should be in the 85%-90% efficiency range over the whole operating regime anyway... Pulse & glide is a way to maximize the efficiency of a internal combustion gasoline engine, which makes it’s best brake-specific-fuel-consumption at about 5/8ths throttle. You pulse at that throttle opening to accelerate the car in the engine’s most efficient load area, then glide down until you’re about to be rear ended. Lather, rinse, repeat.

This is going to be completely irrelevant in the Volt, because the ICE isn’t connected to the wheels. The pulse & glide of the ICE (if the GM engineers to their job of minimizing fuel consumption) will be built into the control software for the ICE.

Ok, some clever people will probably figure out at what load & rpm the electric motor is most efficient and then try to keep it’s operation in that range to maximize miles/kWh, but it should be in the 85%-90% efficiency range over the whole operating regime anyway…

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