Low-speed machine low-energy-consumption quick-responding mechanism variable in combustion chamber volume

Abstract

The invention discloses a low-speed machine low-energy-consumption quick-responding mechanism variable in combustion chamber volume and belongs to the technical field of marine low-speed machines. A piston pin of the mechanism variable in combustion chamber volume is connected with a piston assembly and a cross head, and a connecting pin is connected with a small head of a connecting rod. The rotary center of an adjusting rocker arm is concentric with the axis of the piston pin, the adjusting rocker arm is peripherally fixed to a connecting pin, the rotary center of the adjusting rocker arm isnot concentric with the axis of the connecting pin. An adjusting valve is provided with at least four valve ports, and a pressure source is connected with the first valve port through a one-way valve. The mechanism variable in combustion chamber volume achieves that the combustion chamber volume of a low-speed machine is flexible and variable by controlling the adjusting valve. The mechanism is arranged on a reciprocating motion part, and the influence of vibration of the low-speed machine on the variable characteristic of the combustion chamber volume is reduced. An adjusting system consisting of the adjusting valve, a first one-way valve, a second one-way valve and a third one-way valve is adopted to drive a first plunger piston assembly and a second plunger piston assembly, response isquick during combustion chamber volume adjustment, and the energy consumption caused by mechanism driving is low.

Description

technical field [0001] The invention relates to a variable combustion chamber volume mechanism with low energy consumption and quick response for a low-speed engine, which belongs to the technical field of marine low-speed engines. Background technique [0002] Ship engine emission regulations are becoming increasingly stringent, and users are demanding to minimize ship operating costs. Marine two-stroke low-speed engines used in ocean-going freighters and other ships consume a large amount of fuel and emit a large amount of harmful substances every year. In this regard, advanced technologies such as gas engines, dual-fuel engines, and Miller cycles have been continuously adopted. The above technologies all require that the volume of the combustion chamber is always variable in real time in all operating conditions of the low-speed engine, so as to ensure that the low-speed engine always works with the best performance. At present, the low-speed machine has not yet adopted...

AI Technical Summary

Problems solved by technology

At present, the low-speed machine has not yet adopted a variable combustion chamber volume mechanism

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