Abstract:
A method for recuperating thermal energy in the oxidant air generated by an oxidant air compressor of an internal combustion engine is provided, which consists in taking thermal energy using a heat exchanger in which circulates a heat transferring fluid and which is located in the oxidant air circuit between the compressor and the engine, and transferring the thermal energy recuperated by the fluid to a thermal energy consuming group. The invention is characterized in that it further consists in: detecting the temperature of the surcharging air upstream of the heat exchanger; and when the detected temperature is lower than a first reference temperature, in short circuiting the heat exchanger and heating the heat transferring fluid up to approximately the reference temperature using an auxiliary heating device.
Abstract:
A method and apparatus for improving the performance of an internal combustion engine in which a piston (10) has a hollow head (11) within the cavity of which there is mounted an open topped frusto-conical bulbous casing (13), the opening of which is covered with a mesh (14) preferably welded to its rim (15). The casing-mesh unit is attached by means of spacers (16) preferably comprising pins (17) and (21) in such a way that a space is formed between the convex exterior walls of the casing (13) and the concave interior walls of the cavity (12) of the piston head (11).