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PluginIndia Electric Vehicles

Mild Hybridization - Will it work for India?

29/12/2013

5 Comments

 
By Alysha Webb
I've been writing about electrification in China’s automotive industry for a few years now.  One feature of China’s automotive industry is the government’s penchant for issuing plans of an enormous scale to serve as a guideline for targets, such as the development of a New Energy Vehicle industry in China.  New Energy Vehicles generally refer to battery-electric, plug-in hybrid electric, and hydrogen fuel cell vehicles.I just started looking into India’s plans to grow its EV sector, and I see that India too has issued a plan – the National Electric Mobility Mission Plan 2020.  The NEMMP seems to take a somewhat broader approach than China’s.
India’s plan focuses on all forms of electrification and includes 2-wheel and 4-wheel vehicles.  But the goal is similar, reduce CO2 emissions and dependence on foreign oil while developing domestic capabilities to produce electric vehicles.Now India is just getting starting, but a word of advice I would offer is to consider leaning on foreign suppliers of some automotive technologies in order to achieve, or at least come close to, the goal of sales of up to 7 million EVs by 2020.  Also, don’t ignore technology that is ready to come to market in favor of technology that is not yet commercially viable. 
Here, I’m thinking of mild hybridization.  It will soon be available widely in Europe and could help India would achieve significant reductions in CO2 emissions. The problem is that even at a relatively low cost, say $1,500 per vehicle, mild hybridization may still be too dear for many Indian consumers.  The solution? The government should subsidize it.  Then it will be up to the automakers and suppliers to tout the fuel-saving benefits of mild hybridization and hopefully create a market for it.
Picture
A petrol car with HyBoost system
What is mild hybridization?  Generally it combines the 12V lead acid battery with a more powerful 48V lithium-ion battery. The smaller battery provides a start-stop capability, allowing the car to run on electricity alone as it coasts to a stop and then re-accelerates.  The 12V system also run the interior lights, entertainment systems, and similar functions that don’t require huge amounts of energy.  The 48V battery provides a smoother starting and stopping experience as well as running systems that are bigger draws on the battery such as heating and air conditioning and power steering.  
Many suppliers are currently getting ready to launch 48V systems. I talked with Paul Rivera, director of the global product group for hybrids and electrical systems at U.K.-based engineering firm Ricardo Plc. about its mild hybridization system.  Called HyBoost, the Ricardo system ties together a handful of fuel-saving technologies, including the two batteries as well as regenerative braking, and a down-sized turbo-charged engine.

PicturePower for the Hyboost’s system is got from the regenerative braking system
How does it work?
HyBoost works by reducing the engine capacity of a car by 50% - smaller engines that are capable of doing the same amount of work as a larger engine by using efficient methods, such as turbocharging. The engine is combined with a multi hybrid system. The energy lost as heat during breaking are stored into ultra capacitors and this energy is used to give some hybrid functionalities. Like on the drive cycle when you step on the pedal, they can add torque back into the crankshaft.
Basically, they can take the power that was stored in the electric supercharger.

Automakers, like Ford, are working with Ricardo by “downsizing” their engines.
They are essentially studying two Ford engines: a 2.0-liter 4-cylinder with 145 horsepower and a 1.0-liter 3-cylinder with 160 horsepower. Ricardo is adding electrically-powered superchargers to these Ford HyBoost engines to achieve maximum fuel efficiency. In the study using the 2.0-liter engine, the firm was able to achieve approximately 67 mpg! This is compared to 32 mpg without the modifications.
If I’m interpreting the information Rivera sent me correctly, the HyBoost system can produce up to 44 percent better fuel economy on some vehicles.  The price, said Ricardo, is about US $1,500 per vehicle. 
That is just one example. The German automakers have already started producing cars with 48V systems produced by other suppliers; those models will be on the market soon.   The Germans are the ones who first used a 48V system, says David Alexander of research firm Navigant.  They wanted something bigger than a 12V in order to smooth out the feel of driving a car with start-stop, he said.   
In Europe, the 48V system will first be included on high-end vehicles to both improve the driving feel (not for performance) and to boost fuel economy, he says.  It won’t be an offered as option, figures Alexander.  “It will just be hidden underneath,” he says.  The OEMS will just absorb the cost.  At the low-end 48V systems might not have much use in Europe because small, light cars are so fuel efficient, says Alexander.  It might be used to add some ability to drive on pure electric power, he says.

There are people who wont buy an EV
That is why the government in India should consider subsidizing mild hybridization, to make it palatable to consumers even on smaller, cheaper vehicles.   I’m talking a tax rebate or an outright refund at time of purchase.  It would get a lot of people into more fuel efficient and lower-polluting cars. Meanwhile, the government should also be helping with the build out of an electric vehicle charging infrastructure to get India ready for plug-in electric vehicles. 

5 Comments
SRK
29/12/2013 06:58:49 am

Does Mild Hybridization double the mileage? If my car is giving 16 km/L will it increase to 30 km/L?

Reply
Alysha
29/12/2013 07:54:09 pm

No, it won't double your mileage. The fuel efficiency improvement varies from model to model and without the additional fuel saving features such as smaller engine, turbo-charging, etc which are included in the HyBoost package, the improvements from mild hybridization seem to be 10-15% based on European driving cycles. CO2 reduction is often the main selling point of these systems since they help automakers reach required targets. But of course that implies improve fuel economy.

Reply
Yash Bhatia link
2/1/2014 03:49:31 am

Mild hybridization sounds like a very good idea for a cost-sensitive market like ours. The answer to the eternal "Kitna deti hain?" would be a smile on the salesman's face. :)
Plug-in electric vehicles will take at least 8-10 years to be commercially viable, taking into account our politicians' greed & the current economic state!

Reply
Ramesh Krishnan
2/1/2014 05:29:32 am

Mild hybridization is a good idea. All options have to be tried. There is only gain.

Reply
Zac
31/1/2014 08:34:32 am

When I was in India I saw many Mahindra Scorpio Mild Hybrids, so it looks as though this process is already well underway.

Reply

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