Multi-cylindered two stroke cycle engines

• Main Authors: SCHLUNKE CHRISTOPHER KIM, SEEBER KENNETH PHILIP
• Format: Patent
• Language: English; Spanish
• Published: 01.06.1989
• Edition: 4
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

A multi-cylinder engine block for an engine operating on the two-stroke cycle and having two or more adjacent cylinder bores (10,11,12) with the axes of the bores parallel and in a common longitudinal plane. Each cylinder bore having an exhaust port (20), and an exhaust passage (21) extending from each exhaust port (20) to an external surface (22) of the block in a direction generally at right angles to said common longitudinal plane (25). Two transfer ports (27,28) being provided communicating with the same cylinder bore on either side of the exhaust port in the direction of said common longitudinal plane. Each transfer port communicating with a respective transfer passage. The transfer ports (27,28) not extending beyond the common longitudinal plane (25), and the transfer passages (26,23) adjacent the respective transfer ports (27,28) extending in a direction generally tangential to the cylinder bore. The transfer ports (27,28) and transfer passages (23,26) being configured and located so the axes of two adjacent cylinder bores are spaced apart not more than about 1.22 times the diameter of the cylinder bores. UN BLOQUE MOTOR DE VARIOS CILINDROS PARA UN MOTOR QUE FUNCIONA EN EL CICLO DE DOS TIEMPOS Y QUE TIENE DOS O MAS CILINDROS ADYACENTES (10, 11, 12) CON LOS EJES DE LOS CILINDROS PARALELOS Y EN UN PLANO LONGITUDINAL COMUN. CADA CILINDRO TIENE UNA LUMBRERA DE ESCAPE (20), Y UN PASO DE ESCAPE (21) HASTA UNA SUPERFICIE EXTERNA (22) DEL BLOQUE EN UNA DIRECCION GENERALMENTE EN ANGULO RECTO CON DICHO PLANO LONGITUDINAL COMUN (25). ESTAN PREVISTAS DOS LUMBRERAS DE TRANSFERENCIA (27, 28) QUE COMUNICAN CON EL MISMO CILINDRO A CADA LADO DE LA LUMBRERA DE ESCAPE EN LA DIRECCION DE DICHO PKANO LONGITUDINAL COMUN. CADA LUMBRERA DE TRANSFERENCIA COMUNICA CON UN PASO DE TRANSFERENCIA RESPECTIVO. LAS LUMBRERAS DE TRANSFERENCIA (27, 28) NO SE EXTIENDEN MAS ALLA DEL PLANO LONGITUDINAL COMUN (25), Y LOS PASOS DE TRANSFERENCIA (26, 23) JUNTO A LAS RESPECTIVAS LUMBRERAS DE TRANSFERENCIA (27, 28) SE EXTIENDEN EN UNA DIRECCIONGENERALMENTE TANGENCIAL AL CILINDRO. LAS LUMBRERAS DE TRANSFERENCIA (27, 28) Y LOS PASOS DETRANSFERENCIA (23, 26) ESTAN CONFIGURADOS Y SITUADOS DE MANERA QUE LOS EJES DE DOS CILINDROS ADYACENTES ESTAN ESPACIADOS NO MAS DE APROXIMADAMENTE 1,22 VECES EL DIAMETRO DE LOS CILINDROS.