Comments on: Could This Be the Volt’s Combustion Engine: GM Demonstrates HCCI Motor for 1st Time in Driveable Car http://gm-volt.com/2007/08/26/could-this-be-the-volts-combustion-engine-gm-demonstrates-hcci-motor-for-1st-time-in-driveable-car/ Real-time news, information, and discussion about the Chevrolet Volt. Mon, 13 Feb 2012 19:22:57 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Neutron Flux http://gm-volt.com/2007/08/26/could-this-be-the-volts-combustion-engine-gm-demonstrates-hcci-motor-for-1st-time-in-driveable-car/#comment-5308 Neutron Flux Mon, 27 Aug 2007 19:30:20 +0000 http://www.gm-volt.com/2007/08/26/could-this-be-the-volts-combustion-engine-gm-demonstrates-hcci-motor-for-1st-time-in-driveable-car/#comment-5308 I must agree that now is not the time for HCCI. We have enough technical issues and will have enough service packs on the initial release of Volt 1.0 fine tuning battery mgmt etc. GM would be well advised to take the large gains in fleet fuel efficiency produced by the PEHV & not risk damage to the potential marketability by introducing too many unknowns with a planned implementation of 2011 model year production, which is only begging for trouble. Hopefully GM has heard of "milk before meat". They have been working on this engine for several decades & still have significant issues. Not a good time to put a Piranha in the baby bath water. I must agree that now is not the time for HCCI. We have enough technical issues and will have enough service packs on the initial release of Volt 1.0 fine tuning battery mgmt etc. GM would be well advised to take the large gains in fleet fuel efficiency produced by the PEHV & not risk damage to the potential marketability by introducing too many unknowns with a planned implementation of 2011 model year production, which is only begging for trouble. Hopefully GM has heard of “milk before meat”. They have been working on this engine for several decades & still have significant issues. Not a good time to put a Piranha in the baby bath water.

]]> By: Steve F http://gm-volt.com/2007/08/26/could-this-be-the-volts-combustion-engine-gm-demonstrates-hcci-motor-for-1st-time-in-driveable-car/#comment-5306 Steve F Mon, 27 Aug 2007 19:13:36 +0000 http://www.gm-volt.com/2007/08/26/could-this-be-the-volts-combustion-engine-gm-demonstrates-hcci-motor-for-1st-time-in-driveable-car/#comment-5306 Another vote to not include a HCCI range extender in the Volt. It is to much of a unknown and already have enough new technology. Yes, focus on the electric powertrain and batteries. Just having ICE with turbocharge, like original proposal, will be fine for first release. Only better choice and proven is to offer diesel in US, but that could also add cost to item that will not be used that much. So agree keep it simple. Another vote to not include a HCCI range extender in the Volt. It is to much of a unknown and already have enough new technology. Yes, focus on the electric powertrain and batteries. Just having ICE with turbocharge, like original proposal, will be fine for first release. Only better choice and proven is to offer diesel in US, but that could also add cost to item that will not be used that much. So agree keep it simple.

]]> By: Andy http://gm-volt.com/2007/08/26/could-this-be-the-volts-combustion-engine-gm-demonstrates-hcci-motor-for-1st-time-in-driveable-car/#comment-5293 Andy Mon, 27 Aug 2007 15:44:25 +0000 http://www.gm-volt.com/2007/08/26/could-this-be-the-volts-combustion-engine-gm-demonstrates-hcci-motor-for-1st-time-in-driveable-car/#comment-5293 I tend to agree with Kent... let's keep it simple. Too much invention means too much to go wrong. (That's the engineer in me talking) GM can't afford anymore unknowns. Bring the HCCI (which I must say is VERY cool) to other vehicles first, and once it is proven technology, cross it over to the Volt. (Same goes for the Volt... once it is proven technology, cross it over to other vehicles) I tend to agree with Kent… let’s keep it simple. Too much invention means too much to go wrong. (That’s the engineer in me talking) GM can’t afford anymore unknowns. Bring the HCCI (which I must say is VERY cool) to other vehicles first, and once it is proven technology, cross it over to the Volt. (Same goes for the Volt… once it is proven technology, cross it over to other vehicles)

]]> By: Questions http://gm-volt.com/2007/08/26/could-this-be-the-volts-combustion-engine-gm-demonstrates-hcci-motor-for-1st-time-in-driveable-car/#comment-5285 Questions Mon, 27 Aug 2007 14:33:24 +0000 http://www.gm-volt.com/2007/08/26/could-this-be-the-volts-combustion-engine-gm-demonstrates-hcci-motor-for-1st-time-in-driveable-car/#comment-5285 I'm sure the engine can adjust as needed to whatever fuel is used, since it will only have a constant RPM. I like this idea, and it'll be a nice surprise if they use it in the Volt. I’m sure the engine can adjust as needed to whatever fuel is used, since it will only have a constant RPM.

I like this idea, and it’ll be a nice surprise if they use it in the Volt.

]]> By: Brian http://gm-volt.com/2007/08/26/could-this-be-the-volts-combustion-engine-gm-demonstrates-hcci-motor-for-1st-time-in-driveable-car/#comment-5284 Brian Mon, 27 Aug 2007 14:14:37 +0000 http://www.gm-volt.com/2007/08/26/could-this-be-the-volts-combustion-engine-gm-demonstrates-hcci-motor-for-1st-time-in-driveable-car/#comment-5284 i'm concerned about the octane level of gas you use in this engine. wouldn't it be a very specific requirement? in other words, if the engine was designed to burn regular gas, then premium may fail to ignite (because of its higher octane). likewise, if the engine was designed for premium, there would be devastating knock if regular gas was used. also, i don't see E85 as an option, unless the engine is designed for E85 only, and regular gasoline is never used (E85 has a very high octane number, even higher than premium gas). i’m concerned about the octane level of gas you use in this engine. wouldn’t it be a very specific requirement? in other words, if the engine was designed to burn regular gas, then premium may fail to ignite (because of its higher octane). likewise, if the engine was designed for premium, there would be devastating knock if regular gas was used.

also, i don’t see E85 as an option, unless the engine is designed for E85 only, and regular gasoline is never used (E85 has a very high octane number, even higher than premium gas).

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