QIAN WANG
Massage Therapy at Smt Ctr Way, Orlando, FL

6210042, Apr 3, 2001

Jun 15, 1998

9/097507

Qian Wang - Miami FL
Yiding Cao - Miami FL

F16C 3700

384317

Described herein is an isothermal journal bearing that incorporates heat pipes for temperature reduction and uniformity. The heat pipes can be fabricated by turning and are arranged within the bearing wall circumferentially. Due to the high thermal conductance of the heat pipe, frictional heat produced at the contact and during the rubbing process can be dissipated promptly through the entire bearing wall, resulting in a lower temperature in the pressurized region and a relatively uniform temperature along the circumference of the bearing. The temperature reduction and uniformity would significantly reduce the bearing failure tendency due to heat accumulation and bearing thermal distortion.

5454351, Oct 3, 1995

Apr 1, 1994

8/221500

Yiding Cao - Miami FL
Qian Wang - Miami FL

F02F 318

123 4135

Described herein is an engine piston that incorporates reciprocating heat pipes for temperature reduction in the upper section of the piston. The reciprocating heat pipes are arranged circumferentially, close to the piston ring grooves, and extend from the region of the top ring groove to the piston skirt region. Since the reciprocating heat pipe has a very high thermal conductance, excessive heat in the top ring groove region can be transferred to the heat pipe section corresponding to the piston skirt region, where accessibility to the cooling oil is much greater, and heat can be dissipated via oil splash/mist or jet impingement cooling. Also, the heat dissipation area in contact with the cooling oil is significantly increased. As a result, the temperature in the upper section of the piston can be considerably decreased. The temperature reduction in the upper section of the piston, including the top ring groove region, would significantly improve engine thermal efficiency and performance of the piston assembly.