Category

Automotive

Connected Cars: Conduit vs. Content

By Automotive, Internet of Things (IoT), Telematics 3 Comments

In the Oct.-Nov. issue of Connected World Magazine, Dorothy Glancy of Santa Clara Law offers a point of view regarding potential privacy concerns related to connected cars.

With the hype and the hope surrounding connected cars technologies and the autonomous driving, the author is correct in identifying potential privacy and data usage issues concerning vehicle operational data and vehicle location information, other observations are hardly clear-cut and are lost in technical particulars, not all of them accurate.

In order to understand potential data privacy risks and devise appropriate remedies, we need to differentiate between data acquisition (sensors), data storage (EDR), data transmission (vehicle to vehicle (V2V) communication and some telematics) and services (more telematics and location-based services). The potential for exposing private information increases as we progress in this process. Read More

Tesla Roadster Battery Longevity Test

By Automotive, Autonomous, Connected, Electric, Shared Vehicles, Manufacturing One Comment

Following the seemingly endless discussions about the “true” range of eclectic vehicle has been fascinating. Remember the New York Times’ article Stalled Out on Tesla’s Electric Highway and the ensuing public back and forth between Elon Musk and John Broder?

There are differing opinions on the range viability and long term durability of the battery packs in pure and extended range electric vehicles. Unfortunately, too many of these analyses begin with “I am not an engineer, but…”  So it was refreshing to read the objective scientific analysis of the Tesla Roadster battery pack published recently by Plug In America. The highlights of this report are:

  • The capacity of the battery pack after 5 years and 50,000 miles is expected to be 80-85% of the original, an average loss of about 3.7 miles (1.6%) per 10,000 miles driven. This is better performance than Tesla’s promised estimate of 70% of the original capacity. However, the study found considerable variation among vehicles with similar mileage.
  • The study found no apparent deterioration in capacity over vehicle’s age, although the oldest data was 4.5 years old (The Roadster production ended in 2012).
  • The studied did not detect an effect of hot climate on the battery’s cell life. Tesla’s thermal management system, which is designed primarily to ensure performance in cold weather, also helps protect the system from very high operating temperatures.

Plug In America also publsihed a similar analysis of the Nissan Leaf battery pack.

 

Nissan Fuel Economy Improvement Measures (and it’s not Leaf)

By Automotive, Autonomous, Connected, Electric, Shared Vehicles, Manufacturing No Comments

Last year, the Obama administration finalized a new set of fuel economy standards that will require car companies to average 54.5 mpg across their fleets by 2025—the biggest change since the Corporate Average Fuel Economy (CAFE) law was passes in 1975. Current rules for CAFE program mandate an average of about 29 miles per gallon, with gradual increases to 35.5 mpg by 2016.

Nissan Altima MPG Improvement

Source: Nissan

Automakers are taking different approaches to meeting the increasingly more stringent guidelines. Electric drivetrain, both plug-in and hybrid, is one obvious approach. Consumers gravitating towards smaller vehicles is another.  However, a significant portion of OEMs’ fleets will still be based on traditional gasoline powered internal combustion engines.

But automotive engineers are not at their wit’s end. The designers of Nissan Altima 2013 were able to achieve significant mpg savings through improvement by employing a newly designed continuously variable transmission, lowering overall mass and reducing drag.

GM’s Electric Vehicle Strategy: Stuck Between Toyota and Tesla

By Automotive, Autonomous, Connected, Electric, Shared Vehicles, Manufacturing No Comments

Although sales of electric vehicle in the U.S. in 2012 were much stronger  than in the previous year, they were barely noticeable, accounting for less EV Sales 2012than 0.5% of the 14.5 million cars and light duty trucks sold during the year. With some exceptions, public interest in owning EVs, seems to be dwindling.

A few years ago, General Motors decided to bet on electric propulsion as part of its recovery strategy, in part perhaps because worldwide sales of EVs, especially in China, are expected to grow over the next decade. GM elected to enter the market with the Chevy badge, targeting the demographic of market leader Toyota Prius, and planning to leverage the  global presence of Chevy in future high demand markets.

Bob Lutz, the former GM Vice Chairman who led the development of the Volt often referred to the Volt as the most important product for GM. The Volt was brought to market in only two years, which is record time for a car with that level of technology innovation. Perhaps Lutz’s promise to finally retire once the Volt has been launched had something to do with it?

The Volt’s sales, while strong, are still well below GM’s expectations and far from being able to make a meaningful dent in the dominance of Toyota’s Prius. Trying to catch up, GM  recently cut the price of the 2013 Chevrolet Volt by $4,000 and nearly doubled the production capacity of the Volt production line. But Toyota’s vehicles, including Prius and other hybrids, and the recently announced plug-in hybrid (PHEV), continue to dominate the market in the U.S.

So GM is signaling a change in tack and going to offer an extended range electric Cadillac, the ELR, presumably to attract more affluent buyers that perhaps prefer the luxary image of Cadillac. At the time, Lutz objected to it because of the lack of brand appeal outside of North America.

The problem with this strategy is that it positions the ELR awkwardly between the popular Toyota Prius and the media darling Tesla Model S, but with hardly enough reason for anyone to switch brands. A low cost Cadillac priced to compete with the Prius will also compete with the Volt, diluting the value of both badges and of the entire portfolio. GM is obviously delighted with the success of the rejuvenated Cadillac brand, but using it to save GM’s EV strategy isn’t such a good idea.

GM has to figure out how to deal with the growing strength of Tesla. Although Tesla sold less than 5,000 vehicles in 2012, it reported a 13,000 unit backlog and has the manufacturing capacity, presumably 20,000 units per year, to deliver it. The growth in Tesla’s market share will come from the same segment GM targets the ELR for.

However, GM has several advantages and opportunities to compete against Tesla’s cars thanks to its retail and service network, and the practicality of the range extending gasoline engine.

Tesla has to clear a number of hurdles before it can reach  profitable market adoption outside the high income urban demographics.  Currently, the company does not have retail and service network. Recently, Tesla recalled Model S cars manufactured between May 10 and June 8. The campaign required driving to a customer location to pick up the vehicle and to deliver it after the repair work. The company is also in an ongoing battle with NADA, franchised car dealers and state regulators to allow it to sell direct to consumers.

Also, despite Tesla’s ongoing efforts to build up its charging infrastructure, the practicality of the Model S outside these urban areas is still limited. Both the ELR and the Volt have a longer  practical driving range that the Model S, because they can revert to gasoline when needed. The Model S can reach 300 miles with the largest capacity battery available. This means you can go only 150 miles or so before you have to turn back. The Volt can travel only 40 miles on a single charge, but with the auxiliary gasoline engine it can reach 300 miles although, obviously, the performance under gasoline engine compared to the Model S will be quite anemic.

GM should use the range advantage, coupled with its service network and the lower sticker price to drive sales and establish stronger brand presence, while Tesla is fighting court battles and building the charging infrastructure. The Tesla brand will no doubt continue to attract certain demographics, but the bigger market will go to the Volt.

As for the Prius PHEV, it looks like with its puny 4.4 kW/hr battery which gives it a meager 6 mile range, it may not be able to limp to the starting line.