Diesel engine single overhead camshaft driven valve rocker mechanism

Abstract

The invention discloses a diesel engine single overhead camshaft driven valve rocker mechanism. The mechanism comprises an exhaust rocker, an intake rocker, rocker ball heads, rocker ball head seats, a rocker shaft, rocker rolling pins, a rocker shaft seat and rocker rolling columns, wherein the rocker ball head seats sleeves the rocker ball heads; the threaded ends of the rocket ball heads are screwed in the threaded holes at the valve ends of the rockers; nuts are arranged at the tops of the threaded ends, exposed from the end faces of the rockers, of the rocker ball heads; the rocker rolling columns are arranged in slots at the cam ends of the rockers and are integrally connected with the rockers through the rocker rolling pins which are inserted in the inner holes at the cam ends of the rockers; a positioning pin is mounted on the bottom surface of the rocker shaft seat, an intake rocker mounting groove and an exhaust rocker mounting groove are milled in the top surface of the rocker shaft seat, and rocker shaft seat fixing bolts are arranged on the bottom surfaces of the grooves; the rocker shaft consists of a mounting boss in the middle and fixed shafts of the intake rocker and exhaust rocker at the two ends, and the both the two shaft ends are milled in the horizontal direction; the intake rocker and the exhaust rocker are respectively sleeved at two ends of the rocker shaft; and three bolts respectively penetrate through the two ends and the middle parts of the rocker shaft so as to fix the rocker shaft at the upper top surface of the rocker shaft seat and then the rocker shaft seat is positioned by the positioning pin.

Description

technical field [0001] The invention belongs to the field of internal combustion engines, and relates to an overhead single camshaft driven valve rocker arm mechanism of a diesel engine. Background technique [0002] At present, my country's emission requirements for vehicles are becoming more and more stringent, the application of vehicle after-treatment devices is becoming more and more extensive, and the requirements for the space utilization of the engine compartment are also getting higher and higher, all of which put forward higher requirements for the design of diesel engines . The common double overhead camshaft structure has a large number of parts, the processing and assembly process of each component of the mechanism is complicated, and the manufacturing is difficult; the axial height and lateral width of the mechanism are relatively large, which increases the height and width of the diesel engine. However, due to the complex structure, many parts, inconvenient di...

AI Technical Summary

Problems solved by technology

The common double overhead camshaft structure has a large number of parts, the processing and assembly process of each component of the mechanism is complicated, and the manufacturing is difficult; the axial height and lateral width of the mechanism are relatively large, which increases the height and width of the diesel engine

However, due to the complex structure, many parts, inconvenient disassembly and assembly, and poor control accuracy, the traditional central camshaft transmission mechanism cannot meet the requirements of high-speed and high-strength diesel engines.

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