Regulator system for a diesel electric locomotive

• US 4,482,813 A
• Filed: 03/25/1983
• Issued: 11/13/1984
• Est. Priority Date: 03/26/1982
• Status: Expired due to Fees

• Current Assignee: Societe Anonyme DETE Alsthom-Atlantique
• Original Assignee: Alsthom-Atlantique
• Inventors: Lerouge, Bernard, Grand-Perret, Philippe
• Primary Examiner(s): Truhe, J. V.
• Assistant Examiner(s): Ip, Paul S. L.
• Application Number:
  US06/478,770
• Time in Patent Office: 599 Days
• Field of Search: 290/7, 290/9, 290/11, 290/14, 290/17, 290/19, 290/21, 290/24, 290/25, 290/32, 290/34, 290/40, 290/40 R, 290/40 A, 290/40 B, 290/40 C, 290/40 F, 290/40 X, 290/51, 318/139, 318/140
• US Class Current: 290/40.00R
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 50/10 using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
• CPC Class Codes: F02B 3/06 with compression ignition compression ignition engines using air or gas for blowing fuel into compressed air in cylinder F02B13/02
• 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

A regulator system for both the Diesel and the electric portions of a Diesel electric locomotive allowing more reliable operation at all locomotive speeds. Said regulator has a regulator to regulate the electric power by varying the excitation (43) of the main generator by means of orders coming from a driver control (1, 8) which set a reference current level and (17) a voltage reference level (19) for the main generator and a Diesel engine gas oil reference level (18). These levels are compared with measurements of true corresponding values (24, 30, 27) and orders (43) for increasing or decreasing excitation are delivered so that the excitation of the main generator remains inside the scope delimited by the various reference levels and a Diesel power regulator which sends out orders to increase or decrease the gas oil injection in accordance with a predetermined Diesel engine speed/injection law and in comparison with the true measurements of the injection and of the Diesel engine speed.

Claims

1. A regulator system for a locomotive having a Diesel engine including an injection pump positioning device, said engine driving a main generator which supplies electric power to the traction motors which drive the locomotive, said regulator system comprising:

a first electric power regulator to regulate the electric power of said main generator and a second regulator to regulate the Diesel engine,

at least one driver control operated by the engine driver for controlling said first electric power regulator including means for setting a multiple purpose reference level from which particular reference levels are derived, establishing mainly a main generator current reference level, a main generator voltage reference level, a Diesel engine injection reference level,

a comparator for comparing each said level with a signal for measuring said true current, true potential or true injection, respectively,

an integrator,

each of the difference signals resulting from the measured level and the reference level being introduced into said integrator in such a way that the integrator delivers an increase order to a main generator excitation device if said measurement signals are lower than said reference levels and a decrease order if at least of said measurement signals is equal to or higher than the corresponding reference level, and

means for establishing a temporary reference level for the speed of the power generator on measuring the injection of the gas oil in the Diesel engine in accordance with a predetermined speed injection law, then of a permanent Diesel engine speed reference level after integration of an external Diesel engine speed reference level to regulate the Diesel engine power automatically,

a second comparator for comparing said permanent speed reference level with a signal for measuring the true Diesel engine speed with the output of said comparator supplying an injection increase order if said true Diesel engine speed measurement signal is lower than said permanent Diesel engine speed reference level and an injection decrease order if said Diesel engine true speed measurement signal is higher than said permanent Diesel engine speed reference level to said injection pump positioning device.

2. A regulator system according to claim 1, wherein said driver control is a pulse sender and/or an analog sender.

3. A regulator system according to claim 2, wherein said means for setting said multiple reference level is displayed by the sender, and said system further includes means for supplying to said multiple reference level setting means a reduction order if the boost speed is not sufficient or if the electric power unit overheats.

4. A regulator system according to claim 1, wherein said means for establishing the Diesel engine speed temporary reference level includes means for receiving an order to move smoothly towards the smaller injection range of the Diesel engine speed injection curve for booster speed pressures which are too low or power unit temperatures which are too high.