Crosshead two-stroke low-speed diesel engine deceleration propulsion device

Abstract

The invention relates to a speed reduction propulsion plant of a crosshead type two-stroke low-speed diesel engine. The speed reduction propulsion plant of the crosshead type two-stroke low-speed diesel engine comprises the crosshead type two-stroke low-speed diesel engine (1) and a propeller (2), and is characterized in that an output shaft (11) of the crosshead type two-stroke low-speed diesel engine (1) is connected with a tail shaft (21) of the propeller (2) through a speed reduction gear set (3) so that the rotating speed of the propeller (2) can be reduced. According to the speed reduction propulsion plant of the crosshead type two-stroke low-speed diesel engine, technical prejudice of technicians in the field is overcome, propulsion efficiency is improved in the mode that the output shaft of the crosshead type two-stroke low-speed diesel engine is connected with the tail shaft of the propeller through the speed reduction gear set so that the rotating speed of the propeller can be reduced in stead of the mode that according to a traditional crosshead type two-stroke low-speed diesel engine, the super long stroke is used for reducing the rotating speed so that propulsion efficiency can be improved, the size and weight of the crosshead type two-stroke low-speed diesel engine with the same output rotating speed and the same power are greatly reduced, vibration is reduced, and compared with a two-stroke low-speed diesel engine with the same rotating speed, the crosshead type two-stroke low-speed diesel engine is lower in cost.

Description

technical field [0001] The invention relates to a crosshead type two-stroke low-speed diesel engine deceleration propulsion device. Background technique [0002] Diesel engines can be divided into medium and high speed diesel engines and low speed diesel engines according to the speed. Most low-speed diesel engines are two-stroke engines, most medium-speed diesel engines are four-stroke engines, and high-speed diesel engines are both. High-power two-stroke low-speed diesel engines are widely used on large ocean-going vessels such as bulk carriers, oil tankers, and container ships, and are used as prime movers in propellers. In order to meet the requirements of low energy consumption of ships, the marine diesel engine continuously reduces the speed in order to improve the propulsion efficiency of the propeller. In addition, the test surface shows that the larger the propeller, the higher the propulsion efficiency, but a prerequisite for a larger propeller is that the speed o...

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Problems solved by technology

In this way, it becomes an energy-consuming product for the manufacturing process, which is not conducive to energy-saving and environmentally friendly manufacturing.

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