Cardan Gear Mechanism versus Slider-Crank Mechanism in Pumps and Engines

In machine design we always want to save space, save energy and produce as much power as possible. We can often reduce accelerations, inertial loads and energy consumption by changing construction. In this study the old cardan gear mechanism (hypocycloid mechanism) has been compared with the conventional slider-crank mechanism in air pumps and four-stroke engines. Comprehensive Newtonian dynamics has been derived for the both mechanisms. First the slidercrank and the cardan gear machines have been studied as lossless systems. Then the friction losses have been added to the calculations. The calculation results show that the cardan gear machines can be more efficient than the slider-crank machines. The smooth running, low mass inertia, high pressures and small frictional power losses make the cardan gear machines clearly better than the slider-crank machines. The dynamic tooth loads of the original cardan gear construction do not rise very high when the tooth clearances are kept tight. On the other hand the half-size crank length causes high bearing forces in the cardan gear machines. The friction losses of the cardan gear machines are generally quite small. The mechanical efficiencies are much higher in the cardan gear machines than in the slider-crank machines in normal use. Crankshaft torques and power needs are smaller in the cardan gear air pumps than in the equal slider-crank air pumps. The mean crankshaft torque and the mean output power are higher in the cardan gear four-stroke engines than in the slider-crank four-stroke engines in normal use. The cardan gear mechanism is at its best, when we want to build a pump or an engine with a long connecting rod (≈ 5⋅crank length) and a thin piston (≈ 1.5⋅crank length) rotating at high angular velocity and intermittently high angular acceleration. The cardan gear machines can be designed also as slide constructions without gears. Suitable applications of the cardan gear machines are three-cylinder half-radial engines for motorcycles, sixcylinder radial engines for airplanes and six-cylinder double half-radial engines for sport cars. The applied equations of Newtonian dynamics, comparative calculations, calculation results (tables, curves and surface plots) and recommendations presented in this study hold novelty value and are unpublished before. They have been made and written by the author first time in this study.

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Craft distillery internationalization - Case: Kyrö Distillery Company

The purpose of this thesis is to identify attractive foreign markets for Kyrö Distillery Company. A small company with limited resources, it needs to make the right choices in their internationalization process to be able to succeed. Market research is needed. The amassed theory at the beginning gives insight and a general framework that we follow later in the empirical part; should they go abroad, where should the go and how are answered. After analyzing the company, the industry and all the necessary forces affecting the environment it was evident that they are ready to start their internationalization process and that the time is opportune. They have a quality brand that will not shy away even under closer inspection and their biggest impediment is access to distribution channels. After concluding that the company is fit to enter foreign markets a system of ranking countries in our target region was formed. Market data was painstakingly collected and analyzed resulting in an a priori list of attractive foreign market options to aid in the company's decision making. Finally we concluded that according to the transaction cost theory, it is beneficial for Kyrö Distillery Company to engage in partnerships, where local companies handle logistics and sales on their behalf.