USA: Ricardo patents hydraulic valve gear

Ricardo
has received a United States patent for a valvegear for reciprocating piston
engines.

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This
variable valve actuation mechanism, using electrohydraulic control of the motion
produced by the engine camshaft, is expected to provide performance improvements
in the areas of volumetric efficiency, intake pumping losses, internal EGR,
and combustion stability.

This mechanism is an improvement over previous hydraulic valvetrain controls
in its wider range of authority, its minimisation of mechanical energy consumption,
and its ability to control valve motion adaptively with changing engine operating
conditions.

These and other advanced control strategies will be important tools for calibrating
engines to meet stringent emission and fuel economy standards in the future,
Ricardo said in a statement.

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Spot leading innovative companies with GlobalData’s Innovation Scorecard

Alphabet, Tencent, and Qualcomm are the top three innovative companies in the last 10 years
The scorecard finds Technology & Communications and Pharma & Healthcare as the two main sectors driving innovation
Loreal placed as ‘Disruptive Leader’ in the Consumer sector, while Revlon has been identified as a traditional laggard
Companies such as Etsy and H&M are challenging retail ‘Disruptive Leaders’ Amazon and Walmart

By GlobalData