Automatic start-stop systems for engines are becoming increasingly common on vehicles in Europe. However, these systems typically use the conventional starter motor to re-start the engines after a stop. This can result in slow re-starts and additional load on the starter. Mazda has devised a new system that they claim will provide quicker, more consistent re-starts. The Mazda system relies on direct injection to function. When the engine is stopped, sensors are used to stop the engine with the pistons in a precise location. This will allow one of the cylinders to have a known amount of air in the combustion chamber. When the time comes to re-start, fuel is injected directly into the cylinder and ignited. The expansion of the burning fuel is used to get the engine turning to re-start the engine. Mazda claims the engine can re-start in 350 milliseconds, about half the time of a conventional starter. The re-starts are indexed to consecutive cylinders so that the same cylinder isn't used every time. Mazda claims a 10 percent reduction in fuel consumption on the Japanese urban test cycle.

[Source: Mazda]

In the wake of a new lithium ion battery joint venture, Bernd Bohr, CEO of Bosch is not concerned that automakers will try to keep battery production in house. In an interview with German magazine Auto Motor und Sport, Bohr was asked about the fact that several automakers including Toyota, Mitsubishi and Nissan are involved in their own joint ventures for lithium batteries. Bosch is investing $300-400 million in a venture with Samsung to produce automotive lithium batteries. Bohr feels it will take 10-15 years for lithium batteries to become dominant so the company still has the opportunity to come to the forefront of the technology and play a leading role. While the Samsung will start with Korean production Bohr intends to eventually expand to other locations as well. By the time lithium batteries become mainstream in electric vehicles, Bohr expects the energy density to increase by a factor of 3-5 times. With Bosch's experience in power tools and appliances the company already has plenty of in-house motor technology that they are now applying to hybrid and electric drive systems. By 2015 Bohr expects hybrids to account for about 2.5-3 million vehicles annually with another 800,000 battery electrics.

Before electrics take over the world though, Bohr expects diesel engines to pick up another five points of market share taking 28 percent of the global market by mid-decade. In spite of elevated diesel prices right now, Bohr believes that diesel will be the only way to meet coming CO2 emissions standards and taxes in the near to mid-term. According to Bohr investments are being made to increase diesel refining capacity that will alleviate the price pressures by 2010. Bohr mentioned that HCCI engines could appear in production before 2015 which will also help reduce consumption and emissions. Bosch is also focusing on large volumes of the most cost-effective methods such as auto start-stop systems which are expected to be on 50 percent of European cars by 2012.

[Source: Auto Motor und Sport]

Starting this October Smart is making its micro-hybrid-drive system standard equipment on the ForTwo in Europe with the 61hp and 71hp gas engines. The micro-hybrid system is just an automated start-stop system and doesn't include and regenerative braking capability. The system has already been available as an option in the more powerful engine since 2007. Smart claims the auto start-stop reduces combined fuel consumption on the NEDC test by eight percent. Those who drive mainly in dense urban areas (which is likely most Smart drivers) can see savings of up to 20 percent. The setup shuts off the engine whenever the driver is braking and the vehicle speed drops below 5mph and automatically fires it up when the brake is released.

Diesel powered Smarts also get an upgraded closed particulate filter for 2009 that removes even more of the soot from the exhaust. All Smarts are also getting interior upgrades including new gauges for the new model year. We'll probably see the interior changes on US bound Smarts but there has been no word on whether we will see the powertrain upgrades. The Daimler press release is after the jump.

[Source: Smart]