Hybrid drive

• US 3,923,115 A
• Filed: 10/26/1972
• Issued: 12/02/1975
• Est. Priority Date: 10/29/1971
• Status: Expired due to Term

• Current Assignee: Juergen Helling
• Original Assignee: Juergen Helling
• Inventors: Helling, Juergen
• Primary Examiner(s): Friaglia, Leo
• Assistant Examiner(s): Mitchell, David M.
• Application Number:
  US05/301,154
• Time in Patent Office: 1,132 Days
• Field of Search: 180/65A,65R,54F,54R,1R 74/665D,751,572 318/161 290/22,31,45
• US Class Current: 180/65.25
• CPC Class Codes: B60K 6/105 the accumulator being a flywheel
• CPC Class Codes: B60K 6/30 characterised by chargeable mechanical accumulators, e.g. flywheels
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 50/15 with additional electric power supply with capacitors charged by engine-driven generators B60L50/40; with batteries charged by engine-driven generators B60L50/61
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/30 using propulsion power stored mechanically, e.g. in fly-wheels
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Abstract

This disclosure relates to a hybrid drive for vehicles and the like which includes at least two driving motors, at least one of the motors being an electric motor and there being at least one source of power coupled to one of the driving motors. Preferably, one of the motors is a motor having a maximum efficiency within a limited speed range and the other driving motor is one adaptable to varying speeds and loads. Also, the drive will be provided with accumulator means for accumulating unused power such as during periods of low operating requirements or/and during periods of deceleration.

Claims

1. A hybrid drive with at least two driving engines, among them at least one electric machine and at least one power source connected to the driving engines, a differential gearing means having three shafts, one of said three shafts being an output shaft, a brake coupled to said output shaft for restraining rotation thereof, said driving engines being coupled to said differential gearing means by the other two shafts of said three shafts, and the relationship between said other two shafts and said differential gearing means being one wherein when one of said other two shafts is driven in one direction and said output shaft is restrained by said brake against rotation the other of said two shafts is rotated in an opposite direction relative to said driven shaft, said electric machine being an electric generator-motor unit operable first as a generator with the speed of the driving therEof in said opposite direction decreasing to zero as said speed of said output shaft increases with said generator-motor unit thereafter functioning as a motor turning in said one direction and assisting in the driving of said output shaft, said differential gearing means being of the type for adding up the performance of said driving engines, a flywheel, and transmission gearing independently connecting said flywheel to at least one of said other two shafts.

2. A hybrid drive according to claim 1, wherein that driving engine coupled to said flywheel is limited more narrowly in regard to the r.p.m. and load range, than the other driving range.

3. A hybrid drive according to claim 2, characterized in that said more limitedly regulable driving engine is a thermal power engine.

4. A hybrid drive according to claim 1, wherein all of said driving engines are electric machines.

5. A hybrid drive according to claim 1 wherein a brake is provided between at least one of said driving engines and said differential gearing means.

6. A hybrid drive according to claim 1 wherein said power source is in the form of an accumulator for electric energy.

7. A hybrid drive according to claim 6 wherein a sensor measuring the state of the accumulator charge is connected to the electric accumulator.

8. A hybrid drive according to claim 1, wherein an eddy-current brake is disposed on the shaft of said flywheel with said flywheel forming a rotor of said eddy-current brake.

9. A hybrid drive according to claim 1 wherein a one way drive means is provided between said driving engine and said one of said other two shafts which is connected to said flywheel.