Turbos Give Small Car Engines a Big Boost

Turbochargers have been used on race cars for decades. They’re also commonly used on heavy-duty trucks to improve operating efficiency and on sports cars to add extra power.

But, turbochargers are starting to appear under the hood of more mundane passenger cars. That’s because the devices are a cost-effective way to improve fuel efficiency. Turbos can help a four-cylinder engine produce as much power as their bigger V-6 counterparts.

It’s part of an ongoing trend toward engine downsizing. Automotive engineers are eager to harness the advantages of turbo technology to improve fuel efficiency and reduce emissions.

[Source: Assembly Magazine, 4th May 2017]

Read more: – http://www.assemblymag.com/articles/93820-turbos-give-small-car-engines-a-big-boost

Why Cars Are Moving to 48-Volt Electrical Systems

Many cars will soon have 48-volt electrical systems. They’ll power stop-start motors, hybrid motors, and turbochargers, allowing for smaller engines with better fuel economy and performance.

They’ll handle accessories ranging from mechanical or hydraulic power to electric power such as power steering, power brakes, water pump, radiator cooling, and air conditioning.

These will be combination 12- and 48-volt systems with 12 volts for traditional lighting and infotainment, 48 volts for more power-hungry components.

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Water injection for gasoline engines

To meet the stringent downsizing demands faced by many vehicle manufactures, Bosch has developed an innovative water injection system for gasoline engines to improve fuel consumption and reduce emissions.
[Source: Automotive Engineer, October 2016]

To meet the stringent downsizing demands faced by many vehicle manufactures, Bosch has developed an innovative water injection system for gasoline engines to improve fuel consumption and reduce emissions.

The system works by injecting a fine water mist into the intake manifold to cool things down so the engine is unable to overheat, providing increased torque even at high engine speeds.

Initially working with BMW, the system was tested in the BWM M4 GTS, but is now ready for other OEMs to adopt the technology. Bosch is targeting the technology at turbocharged engines with higher than 80kW/litre output. The technology will be used in three and four cylinder downsized engines, which will be suitable for many midsize passenger cars.

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Introducing Gasoline Particulate Filters to reduce emissions

With a focus on real world driving emissions, new Euro 6C emission regulations will take effect in September 2017.  As a result, further emphasis will be placed on particulate reduction which will mean vehicle manufacturers will have to seriously consider fitting particulate filters to clean up gasoline engines.

Traditionally, it has been diesel engines that have faced tough restrictions, but now gasoline engines are in the firing line for the amount of particulate matter that can be emitted. Initially, the use of GPFs created much hesitation due to complexity and costs, however, due to the reduction in particulate numbers required there is no doubt some applications will need a GPF.

In 2016, Volkswagen announced it would be introducing GPFs across its line up over the next six years, and now Volvo look set to take a similar approach to help it meet the stringent emissions legislation.

[Source: Automotive Engineer, October 2016]

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