Patent ID: 9140175
Filing Date: 2015-09-22
Classification: F01N,F01P,F02B,H02K,Y02T

Abstract:
1. An engine comprising: a cylinder having a plurality of fins at an outer circumference thereof and forming a combustion chamber; a cooling fan, which is provided at one end of a drive shaft, and which is configured to cool the cylinder; a muffler attached to an exhaust port of the cylinder; and a muffler cover, which covers the muffler, and which forms a muffler accommodating chamber, wherein the muffler cover comprises a cooling air inlet and a cooling air outlet, and a part of cooling air generated by the cooling fan is introduced from the cooling air inlet into the muffler accommodating chamber so as to cool the muffler, wherein: the engine comprises a heat shield plate interposed between the muffler and the muffler cover; and the heat shield plate is provided with a top wall portion that extends between a top wall portion of the muffler and a top wall portion of the muffler cover, and configured to allow the cooling air from the cooling air inlet to flow between the muffler and the heat shield plate.