Engine combines elements of two-stroke and four-stroke

  • 19-Feb-2013 10:20 EST

Grail Engine Technologies Inc.’s new internal-combustion engine, which was designed, developed, and patented by the company, integrates the best characteristics of the traditional two-stroke engine with those of the four-stroke engine. To achieve maximum efficiency, the Grail Cycle engine uses uni-flow scavenging, HCCI, Miller cycle operation, and air cooling of intake valve and piston crown. The result is an emissions-friendly and fuel-efficient direct-injected and multifuel-capable internal-combustion engine suitable for virtually any piston engine application. Preliminary analysis of the Grail engine design flow dynamics using Autodesk Simulation CFD software has produced promising results, claims the company. The evacuation and compression flow dynamics create a violent tornado-like effect as well as a swirl and tumble flow pattern that produces optimal conditions for homogeneous/stoichiometric air-fuel mixture operation (illustrated in image). According to Grail Engine Technologies, no other piston engine in the marketplace is able to produce these distinctive traits.

HTML for Linking to Page
Page URL
Rate It
2.62 Avg. Rating

Read More Articles On

Freudenberg Sealing Technologies has expanded its LESS (Low Emission Sealing Solution) lineup to include new products designed to address challenges associated with powertrain friction, smaller spaces, lighter weight vehicles and growth in the electric mobility vehicle arena.
At least for this moment, all is right with the world as Mercedes-Benz reinstates a new-age version of its iconic inline six-cylinder engine.
Tanktwo, a Finland-based startup company is rethinking the basic battery cell and challenging the fundamental economics and operational assumptions of EVs. The ingenious concept is worth engineers' attention.
Conti’s 48-V system will be standard equipment on both gasoline and diesel versions of the Scenic Hybrid Assist model. It is the first of multiple 48-V production announcements coming over the next few years.

Related Items