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1. (WO1991008121) METHOD AND APPARATUS FOR PROPELLING AND RETARDING OFF-ROAD HAULERS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/008121 International Application No.: PCT/US1990/006712
Publication Date: 13.06.1991 International Filing Date: 23.11.1990
Chapter 2 Demand Filed: 17.06.1991
IPC:
B60L 11/12 (2006.01) ,B60L 11/18 (2006.01) ,F02B 3/06 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
L
PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
11
Electric propulsion with power supplied within the vehicle
02
using engine-driven generators
12
with additional electric power supply, e.g. accumulator
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
L
PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
11
Electric propulsion with power supplied within the vehicle
18
using power supplied from primary cells, secondary cells, or fuel cells
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
3
Engines characterised by air compression and subsequent fuel addition
06
with compression ignition
Applicants:
MARATHON LETOURNEAU COMPANY [US/US]; P.O. Box 61589 Houston, TX 77208-1589, US
Inventors:
JOHNSTON, Ronald, Allen; US
BAKER, Dwight; US
NELSON, Gary, Lee; US
Agent:
ROBINS, W., Ronald ; Vinson & Elkins 3300 First City Tower 1001 Fannin Houston, TX 77002-6760, US
Priority Data:
443,17730.11.1989US
Title (EN) METHOD AND APPARATUS FOR PROPELLING AND RETARDING OFF-ROAD HAULERS
(FR) PROCEDE ET APPAREIL DE PROPULSION ET DE DECELERATION DE CAMIONS TOUS TERRAINS
Abstract:
(EN) An improved method and apparatus are disclosed for powering and controlling the operation of large diesel-electric off-road haulers of the type in which hauler drive wheels (144, 146) are propelled and retarded by DC electric wheel motors (132, 134) powered from a board generator (116), optionally supplemented by DC power, from external trolley lines. In the disclosed system, thyristor-type converters (124, 126) connected into the system AC power grid (118) are used to receive supplemental external power from DC trolley lines and supply it into the AC power distribution grid (118) in the propel mode. The use of such thyristor-type converters (124, 126) makes possible the use of supplemental trolley line power without provision of separate switching or control gear to operate the DC wheel motors when trolley line power is received. Thyristor-type converters also may be used to supply current (generated by wheel motors (132, 134) in the retarding) mode to retarding resistors (176), making possible the use of the initial electrical power generated by the wheel motors to replace load requirements of the diesel engine (112), resulting in substantial fuel savings.
(FR) On décrit un procédé et un appareil améliorés pour propulser et commander le fonctionnement de grands camions diesel-électrique tous terrains, dans lesquels les roues de propulsion (144, 146) sont propulsées et décélérées par des moteurs électriques de roue (132, 134) alimentés par un générateur (116) à bord du véhicule et, facultativement, en plus par une alimentation cc fournie par des fils aériens. Dans le système décrit, des convertisseurs du type à thyristors (124, 126) reliés au réseau ca (118) reçoivent de l'énergie supplémentaire externe par les fils aériens cc et la transmettent au réseau de distribution ca (118) pour le mode propulsion. Les convertisseurs à thyristors (124, 126) permettent d'utiliser une alimentation énergétique supplémentaire fournie par les fils aériens sans qu'il soit nécessaire de prévoir un appareillage de commutation ou de commande séparé pour entraîner les moteurs cc des roues lorsque le courant est fourni par les fils aériens. On peut utiliser des convertisseurs du type à thyristor également pour fournir du courant (généré par les moteurs des roues (132, 134) dans le mode de décélération) à des résistances de décélération (176), ce qui permet d'exploiter l'énergie électrique initiale générée par les moteurs des roues afin de remplacer la demande imposée au moteur diesel (112) et de réaliser d'importantes économies de carburant.
Designated States: AU, BR, CA, JP, NO, SU
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO19922144IL96474EP0502951CA2072966AU1991069037