Archive for Technology

In a car crash we have side airbags for side impacts but in cases where there are two or more passengers in the rear, they can end up hitting each other. Toyota’s solution for this is a new rear-seat center airbag which deploys between the rear passenger seats. It is fitted in a fixed rear-seat center console, and will debut in a production Toyota soon. Another first in the world of airbags for Toyota recently was the Toyota iQ’s rear curtain airbag, necessary because the rear passengers are so near the rear window.

Fiat has revealed a new engine technology called the MultiAir technology which significantly reduces emissions, while improving fuel economy and power delivery. This rather complicated electro-hydraulic variable valve actuation technology is implemented to the intake system. A piston is connected to the intake valve via a hydraulic chamber, which is controlled by a solenoid valve. The movement of this piston is controlled by a mechanical intake camshaft.

When the solenoid valve is closed, the oil in the hydraulic chamber behaves like a solid body and transmits the lift schedule to the intake valves. The lift schedule is imposed by the mechanical intake camshaft. When the solenoid valve is open on the other hand, the hydraulic chamber and the intake valves are de-coupled; the intake valves do not follow the intake camshaft anymore and close under the valve spring action.

The final part of the valve closing stroke is controlled by a dedicated hydraulic brake, to ensure a soft and regular landing phase in any engine operating conditions. Through solenoid valve opening and closing time control, a wide range of optimum intake valve opening schedules can be easily obtained. Continue reading to view more images and to watch a video.

Click here to read the rest of Fiat reveals a new engine technology: MultiAir

Lotus has revealed some details about the Lotus Omnivore engine concept that it will be unveiling at the 2009 Geneva Motor Show. The Omnivore runs on a two-stroke operating cycle that Lotus says is more suited to flex-fuel operations than conventional 4-stroke engines. It also has direct fuel injection, a system called Orbital FlexDI that allows fine-tuning the injection spray to help with HCCI (sparkless ignition) control. The engine uses a monoblock design that combines the block and head, thus eliminating the cylinder head gasket. This improves durability and reduces weight. The exhaust port has a charge trapping valve that allows assymetrical exhaust flow timing and a continuously variable exhaust opening point. A puck at the top of the combustion chamber moves up and down to alter the geometric compression, thus achieving variable compression ratio.

The next time you plan a holiday in Europe, you may want to rent a BMW and make it a road trip holiday. BMW’s new BMW Routes feature (currently still in testing and might be offered on BMW Online services soon) has 25 routes in 5 European countries, designed to run over the course of multiple days with detailed information including photos and even the opening hours of the various stops for interesting sights or food etc you can make along the way. It’s an online portal where you can choose your route and have it sent to your BMW’s iDrive system via ConnectedDrive.

Future plans for BMW include the ability for customers to define their own routes and even share them with other BMW Routes users. This will be useful not only for great sightseeing trips but I can see people mapping out their favourite twisty B-roads for others to have a fun go at. I can’t wait for features such as BMW ConnectedDrive to come to BMWs in Malaysia, but as it is a telco dependant service BMW Malaysia is still in discussions with potential mobile telcos on implementation.

It’s all pretty neat, check out the video after the jump!

Click here to read the rest of BMW Routes: load scenic routes onto your iDrive

Click to enlarge image

The 2009 Mercedes-Benz S-Class will debut an enhancement to the vehicle’s COMAND navigation and entertainment system called SPLITVIEW. Yes, you got it right, it’s going to appear in a production car. Basically, the COMAND 8 inch LCD screen at the front will be able to display two different screens depending on the angle you are viewing it from.

For example, the driver sitting on the left (in a left hand drive car) will be able to view a screen displaying GPS navigation maps and instructions while the front passenger viewing the screen from the right will be able to watch a DVD. To prevent distracting the driver, the passenger can use a supplied pair of headphones for the DVD’s audio.

This is achieved by a technique that places pixels adjacent to each other, then using a filter that divides the image in such a way that only certain pixels can be seen depending on the viewing angle.

What about the rear passengers you say? Won’t they be looking at something a little jumbled up when viewing straight on? Well, I suppose SPLITVIEW is going to be a high-end specification and in cars that will have it available, the rear passengers could most likely have their own COMAND display integrated into the backs of the front passenger seats.

Hanyang University of Korea’s Professor Cho Jae-Phil claims his research team have discovered a way to produce lithium ion batteries that have 8 times more battery life than existing lithium ion batteries!

Now if this were a gadget blog you’d immediately think longer battery life for laptops, but since this is an automotive blog I’m pretty sure you’re thinking what I’m thinking – could this finally seal the fate of electric cars as the new mode of propulsion of the future?

It seems that the lithium ion batteries of today, while still superior to nickel batteries, are limited by the ability of its graphite cathode to store lithium ions. By applying a three-dimensional porous silicon, Professor Cho’s research team claims to be able to store up to 8 times the amount of lithium ions compared to current battery technology.

In another related news story earlier this year, a Stamford University research team discovered a (similiar?) way to improve lithium ion batteries to hold as much as 10 times more charge. It also involved replacing the graphite with a “forest” of silicon nanowires which can store much more lithium compared to graphite.

Related Posts:
DRIVEN: Detroit Electric’s electric Lotus Elise
Detroit Electric to base electric cars on Proton cars?
BMW confirms plans to build electric city car
BMW unveils the MINI E electric car
Pininfarina B0 Electric Car Concept

Between 30% to 50% of the world’s platinum output is used in automobile catalytic converters, and automobile-based usage are set to become even higher of fuel cell cars become more popular in the future, as platinum catalysts are also used in fuel cells.

Platinum is called a precious metal for a reason. Some keywords found in the definition of a precious metal include rare, and high in economic value. Thus it would make sense for an automaker to try to reduce the usage of such precious metals in their vehicles.

Nissan has developed a new ultra-low precious metal catalyst that will debut on the new Nissan Cube, set to be launched this week on the 19th of November 2008. They claim it uses half the amount of precious metals (rhodium and platinum) compared with regular catalysts – 1.3 grams versus 0.65 grams.

In regular catalysts, the high exhaust gas temperatures cause the precious metals to cluster together, thus reducing exposed metal surface. To counter this, catalysts typically contain more precious metals. Nissan’s catalyst adds a “wall” which prevents the clustering of the precious metals.

At first sight you’ll recognise the wheel above as the Michelin Tweel. The Tweel was a concept wheel which used flexible spokes which deform to absorb shock. It does not need air pressure. It also had the ability to be “tuned” to have different vertical and lateral stiffness. This way, vertical stiffness can be reduced to improve ride comfort while lateral stiffness can be increased to improve handling and cornering ability. This allows one tweel to have the best of both worlds!

The Tweel has undergone more R&D and will in the future be used as a lunar wheel for NASA moon rovers. Michelin already supplies NASA with tyres for its space shuttles for more than 20 years now. According to Michelin, the new Tweel-based lunar wheel maintains flexibility and constant ground contact pressure even at very low temperatures to enable moon rovers to navigate loose soil and lunar craters with ease. It has a lower mass with a higher load capacity that is 3.3 times more efficient than the original Apollo Lunar Rover wheels.

Nissan has partnered up with the Japan Atomic Energy Agency (JAEA) to develop a new neutron imaging system which can be used to precisely visualize oil flow in an engine operating at high speed, allowing the car manufacturer to study the behaviour of lubricant in an engine and pin-point precisely where frictional losses are happening so that fuel consumption and CO2 emissions can be reduced. This is a project under the Nissan Green Program 2010.

The system uses neutron radiography and high-speed imaging to look at the oil flow through the engine block to each component, oil splash from the crankshaft and oil delivery to the final drive gear.

Hyundai has just announced a new all-aluminium diesel engine family, the R-Engine family which comes in two displacements – 2.0 liter and 2.2 liter. These motors are key to Hyundai and Kia’s continued efforts to make it big in the European market, and they are Euro 5 compliant thanks to a close-coupled diesel particulate filter. The 2.0 liter unit produces 184 PS and 392Nm of torque while the 2.2 liter unit produces 200 PS and 436Nm of torque, which are pretty impressive figures for a single-turbocharged engine.

It uses an electronically controlled variable geometry turbocharger and a third generation commonrail system with piezo-electric injectors injecting fuel pressurized at 1,800 bar. It is driven by an internal steel silent timing chain, and also has a lower balance shaft encased in a stiffened ladder frame for increased rigidity. These measures helps reduce vibration.

The new R-Engine family will go into production in 2009 and will first appear in new SUVs and large saloons. The Hyundai ix55 and the new Kia Sorento will probably be one of the first few Hyundai vehicles to feature this engine.