Patent Number: 6,308,666

Title: Internal combustion engine having means for recirculating exhaust and turbo boost gases

Abstract: The invention concerns an internal combustion engine devoid of mechanical turbo boost means comprising n cylinders (C1, . . . , C4) each provided with a piston with reciprocating translation movement, each cylinder being equipped with q exhaust valves and r induction valves, q and r being whole numbers not less than 1, each cylinder being, in an operating cycle, filled with air and fuel, a subsequent combustion with expansion supplying the energy delivered by the engine and an exhaust for evacuating burnt gases, the exhaust valves of n cylinders being connected to p exhaust manifold branches such that, on the same manifold branch, n' cylinders are coupled with n'<n and p<n, each exhaust manifold branch (D) being connected to the exhaust gas outlet by a closure member (B) and connected to the atmosphere by at least one breather vent valve (SS) and each cylinder comprising, over part of its operating cycle, three successive phases .phi.1, .phi.2, .phi.3, the n' groups of three phases of the whole set of n cylinders connected to common manifold branch covering the engine entire operating cycle.

Inventors: Drecq; Daniel (78610 Saint Leger en Yvelines, FR)


International Classification: F02M 25/07 (20060101); F02B 27/00 (20060101); F02B 75/02 (20060101); F02M 025/07 ()

Expiration Date: 10/30/2018