| 摘要 |
The reciprocating engine comprises a rocker valve gear, pistons (1) which are fastened to a connecting rod (2) and connected by crankshaft journals (3) to a crankshaft (4), a balancer (5), and a camshaft (10) which is driven by the crankshaft (4) and in turn actuates rockers (11), the mentioned elements being arranged in a crankcase having a cylinder head (24) and cylinder head cover (14). For substantially easier assembly and maintenance, the cylinder head (24) is provided with integrally cast or screwed-on receivers (16) serving for the attachment of the hollow camshaft (10) without requiring separately fastened bearing blocks. Correspondingly, the cylinder head (24) comprises further integrally cast or screwed-on receivers (15, 15-A, 25) which serve for the attachment of the hollow rockers (11) without requiring separately fastened bearing blocks. According to another embodiment of the invention, the camshaft (10), the tensioning wheel (7), and the counter-rotating balancer (5) are driven by the camshaft (4) through a single chain (8) arranged in line with the camshaft, thus allowing a compact construction.
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