Method of generating pressure pulses, a pressure pulse...

Details Method of generating pressure pulses, a pressure pulse... Method of generating pressure pulses, a pressure pulse...

2011-04-19

2011-04-19

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

C123S090130, C137S625000, C251S129150

Reexamination Certificate

active

07926454

ABSTRACT:
A pressure pulse generator, including a pressure pulse transmitting body, a chamber, divided into a first and a second part, a first conduit that leads between a high pressure source and the first part of the chamber, a second conduit that leads between a low pressure source and the second part of the chamber, the body being displaceably arranged in the second part of the chamber and being in contact with a pressure fluid in the chamber, and with the environment and being spring loaded in a direction towards the chamber. The pressure pulse generator includes elements for opening/interrupting the communication between the first part of the chamber and the high pressure source, and elements for opening/interrupting the communication between the second part of the chamber and the low pressure source, and an operable valve body for opening/interrupting the communication between the first and second parts of the chamber.

REFERENCES:
patent: 7472669 (2009-01-01), Hedman
patent: 02/04790 (2002-01-01), None
patent: WO 03102385 (2003-12-01), None

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