Jason Alexei Ritter

US Patent:

20110308253, Dec 22, 2011

Filed:

Jun 21, 2010

Appl. No.:

12/819904

Inventors:

Jason Ritter - Fall City WA, US

Assignee:

PACCAR INC - Bellevue WA

International Classification:

F01K 9/00

US Classification:

60661

Abstract:

A dual cycle waste heat recovery system includes a high-temperature circuit that utilizes a first working fluid. The first working fluid is heated by a first waste heat source and then expanded through a first expander to produce power. The heat recovery system further includes a low-temperature circuit that utilizes a second working fluid. The low-temperature circuit also includes a first heat exchanger for heating the second working fluid with heat from the first working fluid and a second heat exchanger for heating the second working fluid with heat from a second waste heat source. A control valve selectively controls the flow of the second working fluid to each of the first and second heat exchangers according to a predetermined set of parameters. An expander receives the second working fluid from the first and second heat exchangers and expands the second working fluid to produce power.

US Patent:

20110308901, Dec 22, 2011

Filed:

Jun 21, 2010

Appl. No.:

12/819880

Inventors:

Jason Ritter - Fall City WA, US

Assignee:

PACCAR INC - Bellevue WA

International Classification:

B60L 7/10

US Classification:

188159

Abstract:

A regenerative brake system for converting kinetic energy of a moving vehicle into usable mechanical or electrical power is disclosed. The regenerative brake system includes a generator operably coupled to at least one of the vehicle wheels. The system further includes a battery and a thermal storage system, each of which stores power generated by the generator until it can be efficiently used. The thermal storage system includes a heater that uses electrical power from the generator to vaporize a working fluid disposed within a storage tank. The thermal storage system further includes an expander to selectively expand the vaporized working fluid to convert heat from the working fluid into usable energy.