Jean-Jacques Laissus

Danfoss France · Advanced Engineering

An aluminum alloy turbine housing includes an inlet for exhaust, a turbine wheel space configured to receive exhaust via the inlet, a wastegate opening configured to receive exhaust via the inlet and to provide received exhaust to a wastegate chamber, and a locally hardened valve seat surrounding the wastegate opening. Various other examples of dev...

A system includes: a cylinder head for a multi-cylinder internal combustion engine where the cylinder head includes, per cylinder, a first exhaust valve and a corresponding first exhaust port and a second exhaust valve and a corresponding second exhaust port and where, for simultaneous control of the first exhaust valve and the second exhaust valve...

In this paper, a superposition method is presented that allows the computation of acoustic fields radiated by vibrating structures. Basically, the method of superposition applied to sound radiation consists in modelizing the vibrating structure by fictitious acoustic sources located inside it. The sources used can be punctual ones such as monopoles...

In this paper, a superposition method is presented that allows the computation of acoustic fields radiated by vibrating structures. Basically, the method of superposition applied to sound radiation consists in modelizing the vibrating structure by fictitious acoustic sources located inside it. The sources used can be punctual ones such as monopoles...

Sound radiation from plates and shells has usually been studied in the farfield. As far as nearfield radiation is concerned, only a few results are known. A modal method is presented, which allows the computation of nearfield components. The movement of the shell is expanded on the basis of the in?vacuoeigenmodes. The nearfield pressure is calculat...

Thesis (doctoral)--Faculté de médecine et de pharmacie de Lyon, 1949.