260 results about "Steel piston" patented technology

The invention provides a solid-fluid coupling voltage controlled hydrocarbon generation and expulsion simulating experimental device. In the device, a high pressure kettle is formed by a high pressure kettle body which is connected with a high pressure kettle top cover and a high pressure kettle base respectively, wherein a vertical pressurizing column is axially arranged in the middle of the high pressure kettle; a three-way valve is connected between the high pressure kettle and a high pressure pipeline in a high pressure buffer which is provided with a piston; the high pressure buffer is connected with a fluid pressure control pump pipeline; a two-way valve with a switch is connected to a connecting pipeline of the three-way valve and a gas collecting device; a stainless steel piston is arranged in the high pressure buffer, and distilled water for controlling pressure and stratum simulated fluid are filled in cavities at two sides of the stainless steel piston; an upper connecting hole and a lower connecting hole on the high pressure reacting kettle are communicated through the high pressure pipeline; and the high pressure pipeline is communicated with the three-way valve.

A piston for an internal combustion engine is provided. The piston includes a piston body which is made of steel. The piston body has a crown portion with an upper combustion surface, a pair of skirts which depend from the crown surface, a pair of pin bosses for receiving a wrist pin and a plurality of pin boss bridges which extend from the pin bosses to the skirts. Each of the pin boss bridges extends axially to a lower end which is opposite of the crown portion and has a rib with an increased thickness at its lower end. At least one of the pin boss bridges has a generally flat counter-bore surface for providing a reference location for machining of the piston body.