Patent ID: 9074528
Filing Date: 2015-07-07
Classification: F02B,F02M,Y02T

Abstract:
1. A bi-fuel engine for a vehicle comprising: an engine body which has a cylinder head cover disposed detachably on an upper portion thereof; a plurality of branched intake pipes joined at downstream ends thereof to a side of the engine body in communication with an intake path in the engine body; a surge tank to which an upstream end of each of the branched intake pipes is coupled; an air cleaner which communicates with the surge tank; a liquid fuel injection device which works to inject a liquid fuel into the engine body; a plurality of gas fuel hoses each of which is joined at a first end thereof to a portion of one of the branched intake pipes which is located near the downstream end; and a gas fuel injection device equipped with a plurality of gas fuel injectors each of which connects with a second end of one of the gas fuel hoses, wherein each of the branched intake pipes has a length including a slant portion and a bend, the bend being located laterally to the engine body and having a first end leading to the slant portion and a second end leading to the downstream end of the branched intake pipe, the slant portion extending from the first end of the bend to the upstream end of the branched intake pipe at a given angle to a horizontal direction of the engine body so as to create between the surge tank and the upper portion of the engine body a space which is large enough to permit the cylinder head cover to be installed to and uninstalled from the upper portion of the engine body.