Diesel engine speed regulation protection device during emergency braking of locomotive

An emergency braking and protection device technology, applied in locomotives and other directions, can solve problems such as diesel engine speed out of control, speeding, locomotive breaking accidents, etc., and achieve the effects of reducing fuel consumption, improving economy, and improving safety.

Active Publication Date: 2018-09-04
CHINA RAILWAYS CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the locomotive is running at high speed and with heavy load, if the locomotive implements emergency braking due to grounding, overcurrent, high water temperature or other reasons, after the diesel engine is suddenly unloaded, the diesel engine speed will still stay at the current speed and cannot automatically drop to idle speed, which is easy The speed of the diesel engine is out of control and the speed is caused, causing the locomotive to break the accident

Method used

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  • Diesel engine speed regulation protection device during emergency braking of locomotive
  • Diesel engine speed regulation protection device during emergency braking of locomotive
  • Diesel engine speed regulation protection device during emergency braking of locomotive

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Embodiment Construction

[0015] Now according to the attached figure 1 to attach Figure 4 To further illustrate the present invention, in the electrical circuit of the CKD7B type diesel locomotive, the mechanical control switch S2 is connected to the positive pole of the power supply and then connected to the intermediate relay ESCR, that is, an intermediate relay ESCR is connected to the locomotive control circuit, and after the intermediate relay ESCR is drawn out, it is connected with the connected to the negative pole of the power supply, such as Figure 4 As shown, the normally closed contact K1 of the intermediate relay ESCR and the normally open contact K2 of the main generator excitation contactor AFC are connected in parallel to the diesel engine speed control module SCM, and the locomotive is input from the "2" port of the diesel engine speed control module SCM The speed regulation signal (0.5V-4.5V) is converted into different potential signals and sent to the diesel engine control module...

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Abstract

The invention discloses a speed control protecting device for a diesel engine during emergency braking of a locomotive. The speed control protecting device comprises a driver controller and a diesel engine speed control module (SCM). A normally-closed contact K1 of an emergency stop control relay (ESCR) and a normally open contact of a main alternator field contactor (AFC) are connected in parallel and then connected between the driver controller and the diesel engine SCM. The ESCR is connected with the main AFC in parallel, connected with a mechanical control switch S2 in series and then connected to the positive pole and the negative pole of a power supply. By the adoption of the protecting device, after the locomotive is braked emergently and the diesel engine is unloaded suddenly, the rotating speed of the diesel engine can be automatically decreased to the idling rotating speed. The situation that the diesel engine of the locomotive gallops since the rotating speed is out of control can be avoided, the locomotive damage accident is prevented, and the operation safety of the locomotive is improved. Meanwhile, the oil consumption of the locomotive is reduced, and the economical efficiency of the locomotive is improved.

Description

technical field [0001] The invention relates to the technical field of speed regulation of a diesel engine during emergency braking of a locomotive, in particular to a speed regulation protection device for a diesel engine during emergency braking of a locomotive. Background technique [0002] The CKD7B diesel locomotive adopts the CAT3516 diesel engine produced by Caterpillar in the United States. The speed control is to convert the output signals of different gears of the driver controller into different potential signals through the diesel engine speed signal module and send them to the diesel engine control module for processing. Then the purpose of changing the speed of the diesel engine is achieved by adjusting the oil supply of the diesel injector. The speed of the diesel engine changes from 600r / min to 1800r / min during normal operation. [0003] After the diesel engine is started, when the reversing handle of the driver controller is set to "forward pull" or "rear pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61C17/00
CPCB61C17/00
Inventor 曲铁涛杜亚彬张世威张永邹晓伟
Owner CHINA RAILWAYS CORPORATION
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