Working of a Diesel Engine Injection System
Posted by Admin on February, 04, 2012
There are several types of fuel engines that automobile industry can’t do without and Diesel Engine is one such engine. With some exceptions, they are quite similar to the spark ignition engines. After reading this write-up, you’ll get more familiarized with the functionality as well as characteristics of the Diesel Engine Injection System.
Functioning Of Diesel Engines
Construction wise, Diesel engines are somewhat similar to spark ignition engines. Both come with pistons and piston rings, which move inconsistently in the engine cylinders. In both these types of engines, fuel is burnt in combustion chambers that are placed in the cylinders’ upper part. The burning fuel forms a high pressure, which further enables the pistons to rotate the Automobile Crankshaft. Thus, the rotating movement is finally transmitted to the drive wheels thorough the shafts and gears. Such Diesel Engines function with the help of Fuel Injection Pumps, Distribution Pump and Rotary Distribution Pump and their functioning is discussed below:
Fuel Injection Pumps
The Fuel Injection Pumps consist of assembly of plunger and a barrel for every cylinder. Every barrel and plunger assembly is connected to the injection nozzle through an injection line or say, a tube. This tube becomes a passage for the fuel to reach the injection nozzle that is located in the cylinder. This motion happens during the compression stroke when the piston is in process to reach the top centre of the cylinder. In all cases, the quantity of fuel varies in accordance with the kinds of plunger used.
Distribution Pump
The quantity as well as timing of the fuel injected is mainly controlled by the distribution pump. The process is synchronized by a governor. When the accelerator pedal is hard-pressed by the driver, the setting of the governor is changed automatically. In general, the Automotive Diesel Engines use a pneumatic or electronically controlled or mechanical governor. All these types of governors come with variable speed feature and are specially designed to control an engine that functions at different speeds.
Rotary Distribution Pump:
Rotary Distribution Pump is generally driven by a couple of bevel gears. This type of distribution pump comes along with a rotor which transmits fuel to the injection nozzles located in the cylinders while it rotates in motion. At the time when rotor is into motion, high pressure fuel is transmitted to the injection nozzles in the engine.
Well, this was about the diesel engine injection system. To ensure that any vehicle or machine serves you for a long time, it is essential that its diesel engine injection system works efficiently. So be careful while you invest in any type of Diesel Engine and only buy them from experienced suppliers.
This entry was posted on February, 04, 2012 at 14 : 48 pm and is filed under Diesel Engine. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response from your own site.
