GB2344798A

GB2344798A - Electrically-propelled vehicle with hydraulic transmission

Info

Publication number: GB2344798A
Application number: GB9825910A
Authority: GB
Inventors: Mervyn Davies
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-27
Filing date: 1998-11-27
Publication date: 2000-06-21
Anticipated expiration: 2018-11-27
Also published as: GB9825910D0; GB2344798B

Abstract

A vehicle has an electric motor driving a fluid pump which supplies a fluid motor driving the input shaft 13 of a gearbox. The output of the gearbox is connected via a flywheel and clutch assembly to vehicle drive shafts 12 and, through V-belts, to a second fluid pump 4A. It is stated that electrically-driven pump is switched off once a predetermined speed is attained and that the vehicle can then be driven by the pump 4A. The output of the pumps is controlled by a valve block which has a driver-operated foot control.

Description

PRESSURISED LIQUID PROPULSION AN ASSISTED SELF PROPELLED VEHICLE.

This invention-is aimed to save world oil resources and also re uce The invention relates to a battery assisted self propelled vehicle. To create self propulsion, as in this project, are the linking of two pressurised hydraulic or liquid pumps together. One of the pumps in this case, is driven by batteries via an electric motor, the other is driven by a conventional gearbox output drive shaft. Both pumps pressurise fluid into a control block where an electrical device controls one pump at a certain pressure or the opposite as required, terminated by the speed of the vehicle.

This transformation allows one main feed outlet from the control block to another foot controlled block to give a required pressure to a special final hydraulic or fluid motor which has a shaft to accomadate a fly wheel and clutch which bolts onto a conventional gearbox.

An example of this embodiment will now be described with reference of accompanying drawings.

FIGURE 1 1/6 shows an electric motor with pressurised pump attached.

FIGURE 2 2/6 shows a conventional gearbox with a pressurised fluid pump attached to drive shaft.

FIGURE 3 3/6 shows a central pressurised block to incoroperate two inlet pipes, one outlet pipe and also shows an electrical device attached to the internal plunger that regulates either one of the inlet pipes to terminate to the outlet pipe.

FIGURE 3A 3A/6 shows the aparatus of the control block in working position.

FIGURE 4 4/6 shows a foot control valve which illustrates an inlet pipe and an outlet pipe controlling the volume output.

It also shows an electrical device which controlls the electric motor as shown in figure 1.

FIGURE 5 5/6 shows a pressurised fluid motor with an internal rotary drum and shows the output shaft from this motor.

KEY TO DRAWINGS.

FIGURE 1 1/6 1 ELECTRIC MOTOR 2 ELECTRIC CONNECTIONS 3 V BELTS 4 PRESSURISED FLUID PUMP 5 INLET PIPE FROM RESERVOIR 6 OUTLET PIPE TO BLOCK 14 FROM PUMP 4 7 PRESSURE RELEASE VALVE 8 ALL MOUNTING POINTS FIGURE 2 2/6 9 CONVENTIONAL GEARBOX 10 ALTERNATOR 11 PULLEY 12 DRIVE SHAFTS TO WHEELS 13 GEARBOX OUTPUT DRIVE SHAFT TO CLUTCH ASSEMBLY FROM PRESSURISED FLUID MOTOR 27 5A INLET PIPE FROM RESERVOIR 6A FEED PIPE FROM PUMP 4A TO BLOCK 14 FIGURE 3 3/6 14 CONTROL BLOCK 15 SOLENOID 16 ELECTRIC CONNECTIONS 17 PLUNGER 18 PISTON PARTS 19 OUTLET PIPE TO FEED BLOCK 20 FIGURE 3A SAME AS FIGURE 3 ASSEMBLED FIGURE 4 4/6 19A FEED PIPE FROM BLOCK 14 20 FOOT VALVE BLOCK 21 PRESSURE RELEASE VALVE 22 OUTLET OVERLOAD RETURN PIPE TO RESERVOIR 23 FOOT PEDAL 24 VALVE PISTON 25 ELECTRIC TERMINALS 26 OUTLET PIPE TO MOTOR 27 FIGURE 5 5/6 26A FEED PIPE FROM BLOCK 20 27 PRESSURISED MOTOR 28 OUTLET PIPES TO RESERVOIR 29 SPLITCASING RETAINING BOLTS 30 OUTPUT DRIVE SHAFT TO ATTACHMENT OF FLYWHEEL, CLUTCH AND CONVENTIONAL GEARBOX.

Claims

CLAIMS 1 An assisted self propelled vehicle has two separate sources of power to propel vehicle. Both types have pressurised liquid fluid pumps. One pump is attached to an electric motor which has terminals to accommodate power from batteries via control block solenoid.

The other pump/s is driven by the output shaft from gearbox to drive wheels. Both pumps are driven by V belts.
2 An assisted self propelled vehicle has a control block as in claim 1 which incorporates pressure pipes from both pumps.

The solenoid on the control block diverts fluid from each pump through an outlet pipe to a foot control block and at the same time controlls power from batteries to terminals on the same foot pedal block.
3 An assisted self propelled vehicle has a sensor fitted which at a set speed controlls the solenoid as claimed in 1 and 2 to alternate the power to on or off position to the foot control block as in claim 2, at the same time the solenoid pulls a plunger valve to in or out position to divert fluid from pumps as in claim 1 through outlet pipe to drive motor.
4 An assisted self propelled vehicle has a foot pedal block as in claims 2 and 3 which has electrical terminals that supply power from batteries via solenoid as claimed in 1,2 and 3.

When foot pedal is pressed the power supply is switched on by solenoid to drive the electric motor and pressure pump as in claim 1. The pressure pump delivers liquid/fluid into foot pedal block. The foot pedal is then controlling the amount of electric power to electric motor and at the same time the output of fluid that eventually goes out to motor that propells a conventional gearbox. As speed increases to a set speedmeter reading the sensor switches off the solenoid as in claim 3 and also switches power off electric motor as claimed in 1 and alternates propulsion to the driveshaft pressure pump/s to continue to propel vehicle. The pressure pump driven by driveshaft of vehicle is greater than the loss of momentum of vehicle being driven by this latter method.
5. An assisted self propelled vehicle has an alternator/s which are driven by output shaft pulley. These alternator/s maintain the charging of the batteries while vehicle is being propelled by electric motor or driveshaft continuously while vehicle is in motion.