Zhang Tiezhu

A new type of heat — electricity conversion system — Electric power confined piston engine

Internal combustion engine - generator system is a traditional heat - electricity conversion system which is used widely, it has long energy conversion route and low efficiency. Integrating the structures and features of both engine generator and liner generator, Electric Power Confined Piston Engine (abbreviation ECPE) is developed. ECPE can turn heat energy into electrical energy directly, its structure is compact and its efficiency is high. Tests showed that ECPE can output sinusoidal voltage, it can be used in vehicle, military, standby power, etc. The operation principal and characteristics of ECPE is discussed, and some applications are illustrated.

Running stability of hydraulic confined piston engine based on virtual prototype

Hydraulic confined piston engine (HCPE) is a new type of power system to transform the thermal energy from fuel combustion in cylinder into hydraulic energy directly. It s running stability is an important basis of design analysis and performance evaluation. Research achievement on running stability of engine was got by a hypothesis that the angle-velocity of the crankshaft is a constant before. And, of course, this method was not based on actual conditions. In this paper, the simulation model of HCPE is built in software CAD/CAE, and supposes the instantaneous angle-velocity is variable. The angle-velocity of the crankshaft can be converged to a working speed by a new way, controlling the rotated speed by fixed point iteration method. The running stability can reaches 4.75% by this way, and satisfied the using requirementsHydraulic confined piston engine (HCPE) is a new type of power system to transform the thermal energy from fuel combustion in cylinder into hydraulic energy directly. It s running stability is an important basis of design analysis and performance evaluation. Research achievement on running stability of engine was got by a hypothesis that the angle-velocity of the crankshaft is a constant before. And, of course, this method was not based on actual conditions. In this paper, the simulation model of HCPE is built in software CAD/CAE, and supposes the instantaneous angle-velocity is variable. The angle-velocity of the crankshaft can be converged to a working speed by a new way, controlling the rotated speed by fixed point iteration method. The running stability can reaches 4.75% by this way, and satisfied the using requirements