Double group component hydraulic free-piston engine

Abstract

A bipropellant hydraulic free piston engine comprises a liquid oxidizer storage tank, a liquid mineral oil fuel storage tank, two oxidizer control electromagnetism valves, two mineral oil fuel control solenoid valves, a double-piston hydraulic free piston engine and an electronic control unit. No outside oxidizer is needed to participate in the working process of the engine and the condensation process of the working quality, no ignition or oil-spraying device is needed, and no jump-start device is needed either; therefore, the engine has the advantages of simple structure, small size, light weight, reliable operation, high energy density, high power density, and long service life, and represents a driving device that can be applied to energy-autonomy walking machinery and hydraulic energy supply in various circumstances with no oxygen or inadequate oxygen. Therefore, the engine can work under circumstances of no oxygen or inadequate oxygen such as a plateau, underwater, the outer space, etc., with a wide range and broad aspects of application in the field of energy-autonomy walking machinery.

Description

technical field [0001] The invention relates to a two-component hydraulic free-piston engine, in particular to a medium and high-power energy autonomous walking machine, a self-propelled platform, and an anoxic or anoxic environment (such as space, underwater or plateau, etc.) that can be used in the field. The power device for hydraulic energy supply in ) belongs to the field of energy and power technology. Background technique [0002] At present, the energy supply problem is one of the key issues restricting the operation of energy autonomous walking machines in special environments such as the field, underwater and space. Most small and medium-sized energy autonomous walking machines for field operations require a power level of 10W to 1000W and a power or hydraulic energy supply device with excellent performance. Generally speaking, the main energy supply devices in this power range are chemical batteries, fuel cells or small internal combustion generator sets. Howeve...

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Problems solved by technology

However, these energy supply devices or equipment have some disadvantages: the low energy density of chemical batteries makes it difficult to work for a long time; although fuel cells have higher energy density than chemical batteries, even if the hydrogen storage technology is not considered The problem of low power density makes it unsuitable for applications that require rapid power increase; for the same output power, electric actuators such as electric motors used in conjunction with the above-mentioned chemical batteries or fuel cells are generally more hydraulic or pneumatic. The mechanism is large and heavy, which leads to the reduction of system energy density and power density; for small internal combustion generator sets, although fossil fuels such as gasoline or diesel have high energy density, all hydrocarbon fuel engines except for their own moving parts such as In addition to the crankshaft and piston, complex auxiliary subsystems such as compression and ignition are also required; in addition, small internal combustion engines must operate at very high speeds to obtain good power density, so in order to match the relationship between internal combustion engines and actuators, gear reduction devices are often Indispensable, this not only increases the complexity of the system but also causes the reduction of the energy and power density of the whole system; moreover, due to the dependence of the hydrocarbon fuel internal combustion engine on the oxygen in the air, it makes them operate in anaerobic or anoxic environment (such as Underwater or space) applications are very limited

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