TMC and Mazda Agree to Hybrid System Technology License

i was talking about the s400 and bmw active hybrid 7. Looking at the link you provided, GM did not participate in this mild hybrid partnership. Thanks for the link. I must have confused the first partnership to include the second. I don't think they are paying honda royalties, but I could be wrong.

 

International Trade Commission hearing is scheduled for April 19.

 

Does this mean an HSD Mazda-5 (or something similar) will be available in the not-too-distant future?

 

Given that this won't produce a car for a few years . . .
Any idea if this agreement includes licensing or cooperation concerning Li-ion batteries in future cars?

 

Good.

Build a Mazda3 H five door hybrid hatchback w/ 2.2L gas engine for 40 MPG's combined, slightly upsized from current Mazda3 five door. Don't skimp on the rear seat room like the current 3. Give the car 1,000 lb. towing capability, and zoom-zoom driving ....

and no smiley face please!

 

Shame they did the Tribute instead of teh CX-7...maybe next time.

 

CX-7 is a pretty nice looking ride, inside and out. But, I read a bunch of owner reviews on kbb.com ... really poor reliability. Consumer Reports also says worse than average. Not cool.

 

Yes, rampant engine and/or turbo failures and a few A/C compressor failures to boot.

Turbo = detuned/derated base engine = HORRID FE.

CX-7 would have made an EXCELLENT HSD platform. Maybe still will.

 

You bring up a good point. Most manufacturers are using an IMA technology. It's good to see another manufacturer jumping on board with an HSD system.

 

For those of us new to hybrids, what's the difference between IMA and Toyota's HSD? And while we are at it, what's THS, mentioned by ken1784?

And while we are still at it, does anyone know if the Mazda-TMC partnership is supposed to extend into the Li-Ion battery age? I asked a bit ago, and no one answered . . .

 

There are a lot of details left out so use this as a high level synopsis:

• IMA (Integrated Motor Assist) - an electric motor, ~10-15% of the engine power, is built into the flywheel. It provides the low-end torque so a smaller displacement engine can provide the performance of a larger engine. This helps to keep the engine running in fuel efficient regions. Unfortunately, it means the car lacks the ability to do anything but maintain speed on electric only power. It does shutdown the engine when possible and start it up quickly but little to no electric vehicle mode.
• THS (Toyota Hybrid Synergy drive) / HSD (Hybrid Synergy Drive) - are a difference without a significant difference. The architecture uses two motor generators that pass 28% of the power from the engine between each other while the other 72% passes through a planetary gear set called the 'power split device.' The smaller motor generator, MG1, starts and stops the engine and under computer control, manages the variable part of the Continuously Variable Transmission (CVT). The larger motor generator, MG2, has extra power, about 50% of the engine power, to handle regenerative braking and electric vehicle (EV) mode. The car can accelerate from a dead stop on MG2 and sustain speeds up to 42 mph, the 1.5L engines, and up to 46 mph, the 1.8L engine Prius.
• Battery chemistry - doesn't really matter except for the power characteristics. The THS/HSD needs some burst power for hard acceleration, high speed hill climbing, and the ability to absorb regenerative braking charge. Typically there is a trade off between absolute energy capacity and energy surge capacity. NiMH battery chemistry is well known and LiON is still in a state of competing variations.
• Two-mode hybrid - well this has turned out to be a disappointment. GM and their partners have designed a two, motor generator transmission with an electronic, shifted four speed transmission. It is big, heavy and so far, been only sold in low mileage, land barges. GM's 'partners' seem to be bailing out.
• Belt Assisted (BAS) - this is GM's other joke using a heavy duty, rebuilt alternator/motor ... a weak motor generator. It provides engine start and stop and weak regeneration ... a bad GM marketing joke.
• Split wheel power - available on the Estima in Japan and possibly the Hyundai, this system has an independent motor for the rear wheels and a front wheel drive hybrid system. I've not had occasion to study these systems in detail but I suspect the rear wheel motor provides a significant part of the MG2 functions.

Bob Wilson

 

Only Honda use IMA tech. IMA has one motor, no clutch (bolted onto ICE) and mechanical transmission (mCVT).

Hyundai Blue Drive (HBD) has two motors, one clutch and 6 speed automatic (3 planetary gearsets with 5 clutches).

Infinity Direct Response (IDR) has one motor, two clutches and 7 speed automatic (3 planetary gearsets with 6 clutches[?]).

GM 2-mode has two motors, 4 clutches and 3 planetary gearsets -- makes up the entire transaxle.

HSD and Ford hybrid has two motors, no clutches and two planetary gearsets -- makes up the entire transaxle.

 

CVT/PSD: If you have ever seen, encountered, or best of all, analized, a Naval Gunnery computer (Analog Computer) from the Grace Hopper era, then you can come to a much better understanding of this aspect of the Toyota HSD system.

Simple analog computer, mechanically implemented analog computer..."summing machine".

 

I obviously know nothing about transmissions.
How many clutches were there on my plain old 99 Corolla automatic? I thought that you didn't need to change the clutch in automatics because they didn't have a clutch. Seems like I have another think coming . . .

 

I am old enough to have learned that there were such things as analog computers, but I've never seen a naval gunnery computer and don't know who or what Grace Hopper was or why she had an era . . ..
Sorry . . .

 

Sorry, I took it for granted that everyone from AR would know about Admiral Grace Hopper, my bad.

Born in Tyronza.

 

Early Ford automatics had about 2 drum clutches plus 2 (brake) bands. Modern day ones only have drum clutches. The Toyota HSD CVT/PSD does not have clutches or bands, just an analog summing machine, "electro-mechanical analog computer".

 

You think I would have known because my office is within sight of the Ark. Museum of Military History. But I didn't, and what's more, didn't know that we had any Admirals, seeing as how we don't have any seacoast.
When was Adm. Hopper's era?
Thanks!

 

How scalable to higher powered vehicles is the ToyFord systems ?

 

Both use a belt CVT as well.