Abstract: The air-stirring blade is provided that comprises a cylindrical body whose mid portion is provided with blade of such a construction that the inner side of the blade takes the form of stirred grooves with dip angle of about 10° to 80° or typically 30° with respect to vertical axis of the body. The outer side of the blade is of the same shape with the inner side thereof and there are four tangent lines between the blade and body forming a channel of cap-shaped cross-section which is twisted along the body.

Abstract: A diaphragmed air valve system for an automotive engine is provided which is designed for the purpose of keeping intact the shape as well as the mass of an air flow going through it. This diaphragmed air valve system includes a cylindrical air inlet having a valve opening covered by a number of plates of specific type and arrangement. The rate of air flowing into the engine is dictated by the diameter of the valve opening defined by the specific arrangement and type of the plates.

Abstract: The air-stirring blade is provided that comprises a cylindrical body whose mid portion is provided with blade of such a construction that the inner side of the blade takes the form of stirred grooves with dip angle of about 10° to 80° or typically 30° with respect to vertical axis of the body. The outer side of the blade is of the same shape with the inner side thereof and there are four tangent lines between the blade and body forming a channel of cap-shaped cross-section which is twisted along the body.

Abstract: An air guide filter for an internal combustion engine includes an air filter having a pair of support rings coupled to upper and lower portions of the filter. A pleated filter plate is disposed between the support rings, and an air guide is disposed between the support rings parallel with the filter plate. The air guide comprises a plurality holes defined by half-cone cross-section depressions uniformly disposed about its face, such that, when the air guide is placed at a certain elevation angle with respect to the support rings, air flowing into the filter is guided, rotated and mixed with fuel to generate a uniform air-fuel mixture. The uniform mixture improves combustion and engine performance.

Abstract: A diaphragmed air valve system for an automotive engine is provided which is designed for the purpose of keeping intact the shape as well as the mass of an air flow going through it. This diaphragmed air valve system includes a cylindrical air inlet having a valve opening covered by a number of plates of specific type and arrangement. The rate of air flowing into the engine is dictated by the diameter of the valve opening defined by the specific arrangement and type of the plates.

Abstract: A system for preheating diesel fuel before being introduced into a chamber of an internal combustion engine, particularly before or during passing of the fuel through a fuel filter, is provided. The system includes a filtering element and a preheating element, where the heat needed to reach the burning point of the diesel fuel with the presence of preheating will be less in amount compared to the system without preheating. In addition, compression heat with fuel preheating will remain constant so the combustion of the diesel fuel will be relatively perfect improving diesel engine performance.

Abstract: A double action brake shoe comprising a shoe, a lining and an oscillator material as main components which function respectively as a reinforcing body of the brake shoe, a brake material and as a generator of certain vibration frequency when the shoe is applied to a hub. The lining is attached on the surface of the brake shoe and oscillator material is inserted between the shoe and the lining.