Abstract: In the case of a latent heat storage means having a storage medium consisting of or including barium hydroxide octahydrate at least the parts of the heat storage means exposed to the action barium hydroxide octahydrate consist of oxygen-free copper or an alloy thereof with one or more elements selected from the following group: nickel, chromium and phosphorus.

Abstract: In the context of an IC engine of the piston type comprising an inlet duct leading to at least one combustion chamber of the engine, at least one inlet valve which is placed between the inlet duct and each combustion chamber and determines the end of inlet of the combustion chamber, and an additional valve placed upstream from the inlet valve, the additional valve is open on opening of the inlet valve, closes shortly thereafter and opens again before the inlet valve closes.

Abstract: In order to postcharge an IC engine of the piston type during the piston motion in the vicinity of the lower dead center position in addition to the charge drawn in from an individual duct (17) via an induction valve (42) charge compressed by a charger is introduced from a pressure duct (19) via a pressure valve (28) from a charger into an inlet duct (21) leading to the inlet valve (11) of the combustion chamber, the opening phase of the pressure valve (28) and the closing phase of the induction valve (42) overlap and then a pulse exchange takes place towards the combustion chamber between the induction and pressure flows. For this purpose the connection between the induction and the pressure ducts is preferably designed in the manner of a suction jet pump pumping into the combustion chamber.