US20100183451A1 - Hybrid hydraulic-electric engine - Google Patents
Hybrid hydraulic-electric engine Download PDFInfo
- Publication number
- US20100183451A1 US20100183451A1 US12/321,158 US32115809A US2010183451A1 US 20100183451 A1 US20100183451 A1 US 20100183451A1 US 32115809 A US32115809 A US 32115809A US 2010183451 A1 US2010183451 A1 US 2010183451A1
- Authority
- US
- United States
- Prior art keywords
- hydraulic
- pump
- hydraulic pump
- electric motor
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/10—Alleged perpetua mobilia
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
An automobile drive engine is described having an electric motor with two hydraulic pumps fixedly mounted on the center shaft of the motor. The smaller sized hydraulic pump is mounted on one side of the electric motor and the larger pump is mounted on the other side of the electric motor. The two hydraulic pumps are connected by hydraulic hoses which allow hydraulic fluid to circulate between the two pumps. As the electric motor begins to turn, it causes the impeller blades of the larger hydraulic pump to rotate forcing hydraulic fluid through the hose thereby building pressure on the impeller blades of the smaller hydraulic pump. The smaller hydraulic pump then begins to rotate. Because of the ratio of sizes, the smaller hydraulic pump begins to rotate much faster increasing the torque and/or speed produced by the electric motor.
Description
- Not Applicable
- Not Applicable
- Not Applicable
- This invention relates to a hybrid hydraulic-electric engine and in particular to an electric drive engine whose torque characteristics and/or speed are varied by hydraulic pumps mounted on the drive shaft of the electric engine.
- Over the years, many gearing configurations have been proposed to modify the torque and/or speed characteristics of electric motors. For example, U.S. Pat. No. 6,726,588 describes a differential electric engine wherein the rotational torque of the output drive shafts of the engine is controlled by first and second differential stages coupled to the shafts. This configuration is a mechanical gear control of the motor output as compared to the hybrid control system of this invention.
- U.S. Pat. No. 5,492,189 discloses a propulsion system having first and second drive shafts connected to a steady state internal combustion engine and a transitionally operating driving system. The combination engine and driving system are mounted on different shafts of a planetary gear to permit continuous variations of the output speed, independent of the applied torque.
- In U.S. Pat. No. 6,662,905, an elevator control is described which uses the counterweight as a hydraulic plunger to assist in moving the car upward and downward. The counterweight plunger supplements a fluid circulation circuit comprising at least a driving pump coupled to valves. The fluid control does not adjust the speed of the lift motor, other than by varying the load placed on the motor.
- The present invention comprises a hybrid hydraulic-electric motor having a central shaft which is driven by the motor. A forward positioned hydraulic pump and a rearward positioned hydraulic pump are fixedly mounted on the central shaft and are interconnected by hydraulic hoses which permit fluid to circulate between the two hydraulic pumps. As the electric motor turns, it rotates impellers within the forward hydraulic pump thereby applying a rotational force to the rearward hydraulic pump to augment the torque of the electric motor.
-
FIG. 1 shows a hybrid hydraulic-electric engine in accordance with this invention. -
FIG. 2 is a graphical illustration of the relationship between torque and EMF applied to a standard electric engine. -
FIG. 3 is a graphical illustration of the relationship between torque and EMF of a hybrid hydraulic-electric engine in accordance with this invention. -
FIG. 4 is a flow chart showing force flow in the hybrid hydraulic-electric engine of this invention. - Referring more particularly to
FIG. 1 , anelectric motor 10 is fixedly mounted on a central shaft 11 and is powered by abattery 12 through starting switch 13. A forwardhydraulic pump 14 is mounted on one side of shaft 11 and contains a plurality of impeller blades 15 which are rotated by shaft 11 upon energization ofelectric motor 10. Rotating impeller blades 15 pump hydraulic fluid from forwardhydraulic pump 14 throughhydraulic hose 16 to apply hydraulic pressure onimpeller blades 17 of rearwardhydraulic pump 18.Impeller blades 17 are fixedly mounted on shaft 11 and the hydraulic pressure onimpeller blades 17 augments the torque produced byelectric motor 10 on shaft 11. A secondhydraulic hose 19 returns hydraulic fluid fromrearward pump 18 to forwardhydraulic pump 14. Central shaft 11 is particularly adapted to power a load such as an automobile (not shown) requiring a large torque upon energization ofelectric motor 10. For optimum performance, a power ratio between forwardhydraulic pump 14 and rearwardhydraulic pump 18 should be at least 10-1. -
FIG. 2 shows the torque produced by a standard electric motor without the hydraulic assist of this invention as an electromagnetic force (EMF) is applied to the coils of the motor. The torque produced on the motor shaft varies in a substantially linear fashion with the magnitude of the applied EMF. As shown inFIG. 3 , the hybrid hydraulic-electric engine shown inFIG. 1 initially has a relatively slower increasing torque due to the additional load placed on the motor by forwardhydraulic pump 14. The turning of impeller blades 15 in forwardhydraulic pump 14 forces hydraulic fluid into rearwardhydraulic pump 18 to supplement the torque on shaft 11. With a hydraulic ratio of at least 10-1 the output torque on central shaft 11 increases parabalicly to produce a high torque within a short period following energization ofmotor 10. The force flow in hybrid hydraulic-electric engine 10 is shown in the flow diagram ofFIG. 4 .
Claims (3)
1) A hybrid hydraulic-electric engine comprising
An electric motor,
A central shaft driven by said electric motor,
A first hydraulic pump fixedly mounted on said central shaft adjacent one side of said electric motor,
Said first hydraulic pump having a plurality of impeller blades to pump fluid within said pump through an outward orifice of said pump,
A second hydraulic pump mounted on said central shaft on the side of said electric motor remote from the first hydraulic pump,
Fluid conveyor means for transporting hydraulic fluid from said first hydraulic pump to said second hydraulic pump and
Second fluid conveying means for transporting hydraulic fluid from said second hydraulic pump to said first hydraulic pump.
2) A hybrid hydraulic-electric engine pump according to claim 1 wherein the power ratio between the first and second hydraulic pumps is at least 10-1.
3) A hybrid hydraulic-electric hybrid engine according to claim 2 wherein the central shaft rotates the wheels of an automobile.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/321,158 US20100183451A1 (en) | 2009-01-21 | 2009-01-21 | Hybrid hydraulic-electric engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/321,158 US20100183451A1 (en) | 2009-01-21 | 2009-01-21 | Hybrid hydraulic-electric engine |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100183451A1 true US20100183451A1 (en) | 2010-07-22 |
Family
ID=42337101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/321,158 Abandoned US20100183451A1 (en) | 2009-01-21 | 2009-01-21 | Hybrid hydraulic-electric engine |
Country Status (1)
Country | Link |
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US (1) | US20100183451A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5492189A (en) * | 1992-01-16 | 1996-02-20 | Avl Gesellschaft fur Verbrennungskraftmaschinen und Messtechnik m.b.H. Prof. Dr. Dr.h.c. Hans List | Hybrid drive system |
US6461266B1 (en) * | 2001-04-26 | 2002-10-08 | Ervin Weisz | Differential electric engine with variable torque conversion |
US6662905B2 (en) * | 2000-05-19 | 2003-12-16 | Carlos Alberto Sors | Elevator which counterweight is also the plunger of the propelling fluid dynamic device which produces and controls the movements thereof |
US20040247461A1 (en) * | 2001-11-08 | 2004-12-09 | Frank Pflueger | Two stage electrically powered compressor |
US20060107663A1 (en) * | 2002-10-02 | 2006-05-25 | Claudio Filippone | Small scale hybrid engine |
US7273122B2 (en) * | 2004-09-30 | 2007-09-25 | Bosch Rexroth Corporation | Hybrid hydraulic drive system with engine integrated hydraulic machine |
US20100251692A1 (en) * | 2006-10-27 | 2010-10-07 | Kinde Sr Ronald August | Methods of combining a series of more efficient aircraft engines into a unit, or modular units |
-
2009
- 2009-01-21 US US12/321,158 patent/US20100183451A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5492189A (en) * | 1992-01-16 | 1996-02-20 | Avl Gesellschaft fur Verbrennungskraftmaschinen und Messtechnik m.b.H. Prof. Dr. Dr.h.c. Hans List | Hybrid drive system |
US6662905B2 (en) * | 2000-05-19 | 2003-12-16 | Carlos Alberto Sors | Elevator which counterweight is also the plunger of the propelling fluid dynamic device which produces and controls the movements thereof |
US6461266B1 (en) * | 2001-04-26 | 2002-10-08 | Ervin Weisz | Differential electric engine with variable torque conversion |
US6726588B2 (en) * | 2001-04-26 | 2004-04-27 | Cvet Patent Technologies, Inc. | Differential electric engine with variable torque conversion |
US20040247461A1 (en) * | 2001-11-08 | 2004-12-09 | Frank Pflueger | Two stage electrically powered compressor |
US20060107663A1 (en) * | 2002-10-02 | 2006-05-25 | Claudio Filippone | Small scale hybrid engine |
US7273122B2 (en) * | 2004-09-30 | 2007-09-25 | Bosch Rexroth Corporation | Hybrid hydraulic drive system with engine integrated hydraulic machine |
US20100251692A1 (en) * | 2006-10-27 | 2010-10-07 | Kinde Sr Ronald August | Methods of combining a series of more efficient aircraft engines into a unit, or modular units |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |