Title:
HYDRAULIC HYBRID VEHICLE WITH SAFE AND EFFICIENT HYDROSTATIC OPERATION
Document Type and Number:
WIPO Patent Application WO/2011/112663
Kind Code:
A3
Abstract:
A shut off valve is configured to shut off flow from the high pressure fluid line to the high pressure accumulator in a series hydraulic hybrid vehicle in order to quickly raise system pressure in the high pressure fluid line and enable additional torque output from the hydraulic motor for vehicle propulsion. A pressure relief valve is further provided to vent excess flow from the high pressure line to the high pressure accumulator as needed to avoid exceeding a maximum desired system pressure in the high pressure fluid line, thereby providing for safe and efficient hydrostatic operation in the vehicle.
Inventors:
HAUGEN DAVID J (US)
Application Number:
PCT/US2011/027667
Publication Date:
January 05, 2012
Filing Date:
March 09, 2011
Export Citation:
Assignee:
US ENVIRONMENT (US)
HAUGEN DAVID J (US)
HAUGEN DAVID J (US)
International Classes:
B60K6/12; B60K6/22; B60W20/00
Foreign References:
| US4518053A | 1985-05-21 | |||
| US20060000659A1 | 2006-01-05 | |||
| US20010025488A1 | 2001-10-04 | |||
| US20080093152A1 | 2008-04-24 |
Attorney, Agent or Firm:
READ, David, H. (NVFEL2565 Plymouth Rd, Ann Arbor MI, US)
Download PDF:
Previous Patent: PIPERIDIN-4-YL AZETIDINE DERIVATIVES AS JAK1 INHIBITORS
Next Patent: DENTURE ADHESIVE COMPOSITIONS
Next Patent: DENTURE ADHESIVE COMPOSITIONS