An electronic control unit (ECU) is a device capable of making independent decisions, regarding the performance of an engine. It observe, regulates and alter the key control units such as fuel, air and injection timing. It achieve such high performance and low emission requirements; based on the signals from a series of sensors installed. These … Read more Electronic Control Unit – How It Control Engine Performance?
It’s not that easy to start marine diesel engine like on a push of a button in our car. Starting an marine engine require a series of checks and procedures to be followed; before the final go ahead. It’s the fuel, lube oil, starting oil, jacket water and interlocks which affects the overall starting procedure. … Read more How To Start And Reverse The Marine Diesel Engine
For an idle six cylinder engine; the injection timing of all cylinders are timed according to the firing order. For an inline six cylinder engine a firing order of 1-5-3-6-2-4 ensures; that more power is produced without putting unwanted stress and opposing forces on rotating shaft. Normally, a compressed air of 20 to 30 bar is … Read more Starting Air Distributor – Definition, Construction And Working
You must have noticed the heat coming from an engine if you ride a motorcycle or monitored heavy / large diesel engine. Where does this heat come from? Heat is produced in cylinders during the power stroke of an engine. While most of that heat escape the cylinder in form of hot exhaust gas; some … Read more Engine Cooling System – Types And Their Working
Understanding scavenging requires us to understand why we need scavenging in first place. We knew that an adequate amount of oxygen is required to start and sustain any combustion. Now since air contains 21% of oxygen; something engine needs in large amount to burn fuels. Oxygen in form of fresh air is taken in to … Read more Scavenging In Two Stroke Engine – Types, Advantage & Use
Fuel pump and injector directly affects the performance of a marine diesel engine. The quality of combustion in an engine depends on the working of a fuel injector; which leading to proper automation and optimum injection timing. Atomization is the process of breaking fuel in very small particles so that it mix well with the … Read more Detailed Working of Marine Fuel Pump And Injector
Proper ignition and combustion of fuel is the key to efficient marine engine. With use of residual fuel for ignition other less important factors become critical; such as the delay period between the fuel injection and ignition. With most of the commercial ships running on residual fuel its obvious to ask; How the use of … Read more Effects Of Poor Residual Fuel On Marine Diesel Engine?
Have you wondered, whats is the use for variable injection timing or “VIT” if we always learn and told to avoid early and late ignition ! Why am i asking this question? Variable injection timing is a process to alter ignition timing early or late for affecting engine performance. We all know early ignition can … Read more What’s the need to change Injection Timing? – Variable Injection Timing
A Marine diesel engine consists of many working parts. Even different components make few modification in its design but their function remains the same. Each component has a definite function and location in its working. Chances are, you already know something about them even more for few; you already be used to reassembling them in … Read more Marine Diesel Engine – Parts And Functions
You have heard the term “Air starting system”; but don’t know what it is? Well, Starting air system use the compressed air to start the main engine. Compressed air is inserted into various cylinders in a proper sequence to provide the initial torque; required to overcome the inertia of reciprocating parts. Normally, compressed air at … Read more Starting Air System in Marine Diesel Engine