Patent ID: 6761030
Filing Date: 2004-07-13
Classification: F01N,F02G,Y02T

Abstract:
A waste heat recovering device for a multi-cylinder internal combustion engine, comprising:n, where n is greater than 1, exhaust pipes extending respectively from n cylinders of the multi-cylinder internal combustion engine; at least one and less than n collecting pipes for collecting exhaust from said n exhaust pipes; a heat exchanger for recovering heat of exhaust gas being provided in each of said collecting pipes; where each of said collecting pipes are connected to exhaust pipes of cylinders spaced in firing order so as to reduce exhaust interference and situated at a distance from corresponding cylinders which is short enough to normally cause exhaust interference; where a number of heat exchangers provided is less than the number n of the cylinders and a total of periods when each heat exchanger receives a supply of exhaust gas per cycle of the engine is longer than a period of one exhaust stroke of each cylinder.