Charles L. Gray

Hydraulic hybrid vehicle method of safe operation

Efficient bypass valve for multi-stage turbocharging system

Vehicle drive-train including a clutchless transmission, and method of operation

Controlled homogeneous-charge compression-ignition engine

Opposing pump/motors

Efficiency turbocharged engine system with bottoming cycle, and method of operation

Phase change heat engine

Torque balanced opposed-piston engine

Independent displacement opposing pump/motors and method of operation

Safe over-center pump/motor