What type of locomotive is this train?

Full name: Dongfeng 4D passenger (DF4DK) quasi-high-speed passenger diesel locomotive, also known as Dongfeng 4D full suspension trial quasi-high-speed passenger diesel locomotive

Dongfeng 4D quasi-high-speed passenger diesel locomotive has the following Major improvements in:

(1) Diesel engine. It was once equipped with a 16V240ZJE diesel engine with an installed power of 3310kW (500 horsepower). Later, the 16V240ZJD diesel engine was still modified, and the installed power was still 2940kW (4000 horsepower)

(2) Bogie. Installed with two traction motor frame-suspended three-axis bogies; using wheel pair hollow axles, double A six-stage six-link drive device; the first series suspension adopts a parallel structure of inner and outer ring springs and hydraulic shock absorbers, and the second series suspension uses two sets (4 per set) of high round springs and shock absorbers, and is equipped with vertical, Lateral and anti-snake shock absorbers; a four-bar traction mechanism with a low traction point; each bogie uses 6 sets of independently acting braking units; the bogie wheelbase is changed to 2x2000mm; the traction gear transmission ratio is changed to 76/29

(3) The traction motor is changed from ZD109B to ZD106.

(4) The maximum speed of the locomotive is changed to 170km/h, and the sustained speed is 51.8km/ h, the continuous traction force is 160.9kN, and the starting traction force is 232.7kN

(5) Fuel reserve. Reduced from 9000L to 6500; Sand reserve: reduced from 800kg to 400kg.

DF4DK type. Main technical parameters of diesel locomotives Used for trunk line passenger transport

Track gauge 1435mm

Limits GB146.1-83 (vehicle limit 1A, 1B)

Transmission mode-- DC electric transmission

Shaft type Co—Co

Wheel diameter 1050mm

Axle weight 23+3%t

Cub weight 138+3 %t

Through the minimum curve radius 145m

Construction speed: 145km/h

Continuous speed: 39km/h

Start Traction passenger: 302.6km/h

Continuous traction passenger: 214.8km/h

Diesel engine model 16V240ZJD

Diesel engine installed power 2940kW

Main generator model TQFR—3000E

Silicon rectifier model GTF5100/1250

Traction motor model ZD106

Coupler type TB1595—85 bottom opening< /p>

Bogie wheelbase 1800×2mm

Locomotive full wheelbase 15600mm

Locomotive overall dimensions (length×width×height) 21100×3309×4755mm

Domestic fans call it: Flower Tiger is also called DFD4K, but it is not the official name

Top speed: 170KM/H

Everyone always confuses the two motorcycles. In particular, DF4D and DF4DK have no obvious markings, unlike the DF4DF series of DF4D which has an obvious head model number DF4DF, but there is no obvious distinguishing code between the two locomotives DF4D and DF4DK, so many people are confused, and many people ask, Let me talk about the most important differences: one is the graphics, the second is the power, and the third is the internal combustion. Let’s talk about the graphics first: DF4D is red and yellow (see Figure 1), DF4DK is dark red and yellow (See Figure 2) , let’s talk about other aspects (comprehensive talk): 1. Construction speed: DF4D (speed-increasing type): 145K/H; DF4DK (quasi-high-speed type): 170K/H. ; 2. Control system: 4DK adds a dual (multiple) locomotive reconnection control system and an instrument that displays reconnection locomotive information that the original 4D locomotive did not have; a signal light system, and a dual (multiple) locomotive reconnection communication device. It is worth mentioning that 4DK has a new "reconnected locomotive fault isolation switch" in the electrical cabinet. When a single locomotive or dual (multiple) locomotives are traction trains and all locomotives are normal, this switch should be set to "This vehicle is normal" position, the main driver can operate the main locomotive and the heavy-duty locomotive in the main locomotive.

When a dual (multiple) locomotive traction train, the main locomotive or the heavy-duty locomotive fails, the switch of the failed locomotive can be placed in the "Own Car Failure" position, and the main driver can still control the normal locomotive to continue running in the main locomotive. , there is no need to hand over the control power to the heavy-duty locomotive driver, and it is very convenient to use. 3. Braking system: 4D uses JZ-7 air brake; 4DK uses JZ-7 air/electric-pneumatic dual-purpose brake. 4DK canceled the hand brake used in the original 4D and replaced it with a spring brake. 4. Electrical cabinet: 4D uses open self-ventilation cooling; 4DK uses closed forced ventilation cooling. 5. Main rectifier cabinet: 4D uses open forced ventilation cooling; 4DK: uses closed forced ventilation cooling. 6. Tacho generator: 4D uses a single belt drive (the locomotive has been transformed into a double belt after factory repair); 4DK uses a double belt drive. 7. Diesel engine: Both 4D and 4DK use 16V240JZD diesel engine, and some cars after 4DK31** are modified with 16V240JZF diesel engine; 8. Cooling water system: high temperature: 4D uses water tank replenishment closed pressurized cooling, and 4DK uses water tank circulation type Closed pressurized cooling; low temperature: 4D uses water tank replenishment open cooling, 4DK uses water tank circulation open cooling. 9. Blinds: 4D uses vertical blinds; 4DK uses horizontal blinds. 10. Ride system: 4D uses 8 rubber bystanders; 4DK uses 4 sets of 16 springs and 8 vertical hydraulic shock absorbers. 11. Traction motor suspension system: 4D uses semi-suspension; 4DK uses frame-mounted full suspension. 12. Traction transmission: 4D uses gear transmission; 4DK uses hollow shaft 6-link transmission. 13. Others: 4DK adds 6ZJ, 6YJ, and restores 3YJ, 4YJ, and 3ZJ (4D locomotives also restore 3YJ, 4YJ, and 3ZJ after factory repair). 14. Basic braking device: 4D uses an ordinary basic braking device, a single-sided brake shoe, and each brake shoe is equipped with a medium phosphorus cast iron brake shoe, each brake shoe costs 42 yuan; 4DK uses a unit brake, a single-sided brake shoe. , but the appearance of the speed-increasing type attached to the Xining Locomotive Depot of the Qinghai-Tibet Railway Company is exactly the same as the quasi-high-speed type, so they can only be distinguished by the number. The appearance of the speed-increasing type belonging to the Qinghai-Tibet Railway Company's Xining Locomotive Depot is exactly the same as the quasi-high-speed type, so they can only be distinguished by the number.