Diesel Mechanical Engineering

28/09/2019

15/08/2019

Diesel power

15/08/2019

The power of Diesel engine- piston answer

15/08/2019

Perkins diesel engine timing settings

15/08/2019

How diesel two- stroke engine work

13/08/2019

What are the cause of diesel engine start without no hard starting, an he is not firing= answer =
1. Because the timing is not perfect in the engine

11/08/2019

Diesel power

11/08/2019

Engine timing vewing into success

11/08/2019

Power of engine= Piston

08/08/2019

Hydraulic forklift THST carry diesel engine

08/08/2019

It has a 2723- kilowatt Diesel engine which powers two electric motor, making the T282b the biggest AC drive Truck

31/07/2019

Overhauling materials
1.piston
2.gasket
3.metar
4. Block
5.oil rings
6. Piston key
An others

31/07/2019

Radiator fan is not working cause over heating.
or pump leakage on the radiator cause over heating.
or low level of oil in the engine cause over heating.
Low level of water in radiator cause over heating.
An Others

28/07/2019

Four cylinder of diesel engine

25/07/2019

What can be the cause of low pressure petrol engine..

All working parts of an engine need to be in good condition and in correct ‘tune’ for that engine to work properly.
Working from the easiest to hardest,
- check the spark plug(s)
Their condition will give an indication of other parts in poor condition.
- Timing. Simple to measure and check.
- Automatic advance.
- air cleaner. Often overlooked.
- carburettor; jets clear, idle speed, mixture, float level, other settings misadjusted, simple excessive wear.
- valve clearance.
- valve timing misaligned.
- compression test.
(Valves, rings, bore wear)
From there on it becomes necessary to begin taking the engine apart to look for damage. First the head to look for worn and burned valves.
Finally the pistons from the barrels to look for ring damage, bore damage and overall wear.
I find that cleaning the engine often shows up damage that indicates areas of problem.
If the engine is running when you receive it, first check the radiator for bubbles of air (head gasket leak)
Next check for air pressure from the oil-filler or rocker cover.
Check the colour of the oil. (White = water into oil. Black = lack of maintanance or engine gases into oil space.
Oil pressure gauge?
Water temperature gauge?.

What can be the cause of low pressure petrol engine:-

Answer =Dirty fuel filter

25/07/2019

What can be the cause of low pressure petrol engine..

All working parts of an engine need to be in good condition and in correct ‘tune’ for that engine to work properly.
Working from the easiest to hardest,
- check the spark plug(s)
Their condition will give an indication of other parts in poor condition.
- Timing. Simple to measure and check.
- Automatic advance.
- air cleaner. Often overlooked.
- carburettor; jets clear, idle speed, mixture, float level, other settings misadjusted, simple excessive wear.
- valve clearance.
- valve timing misaligned.
- compression test.
(Valves, rings, bore wear)
From there on it becomes necessary to begin taking the engine apart to look for damage. First the head to look for worn and burned valves.
Finally the pistons from the barrels to look for ring damage, bore damage and overall wear.
I find that cleaning the engine often shows up damage that indicates areas of problem.
If the engine is running when you receive it, first check the radiator for bubbles of air (head gasket leak)
Next check for air pressure from the oil-filler or rocker cover.
Check the colour of the oil. (White = water into oil. Black = lack of maintanance or engine gases into oil space.
Oil pressure gauge?
Water temperature gauge?.

What can be the cause of low pressure petrol engine..

Dirty fuel filter

18/07/2019

What causes a diesel engine to stop running?

A diesel engine may stop due to its damaged injector. ... Responsible for overflow and backflow in the system, these worn parts also reduce the rail pressure that halts the diesel engine. The damaged car components can even obstruct the working of diesel injectors, which further causes low RPM or engine to stop.

18/07/2019

what Are the couse of diesel engine running cut off gas:-
Answer:- Fault fuel injectors in a diesel engine
The biggest result of Common rail diesel injector failure is due to excessive back leak or return flow. The cause of this would be internal worn parts ie your pilot valve, nozzles or seals.

16/07/2019

Alternator
An alternator is defined as a machine which converts mechanical energy to electrical energy in the form of alternating current (at a specific voltage and frequency). Alternators are also known as synchronous generators.

The power for the electrical system of a modern vehicle gets produced from an alternator. In previous days, we used DC generators or dynamos for this purpose, but after the development of alternator, we replaced the DC dynamos by more robust and lightweight alternator. Although the electrical system of motor vehicles requires direct current, still an alternator along with diode rectifier instead of a DC generator is a better choice as the complicated commutation is absent in alternator. This particular type of generator used in the vehicle is known as an automotive alternator (learn how an alternator is constructed).

Another use of alternators is in diesel-electric locomotive. The engine of this locomotive is nothing but an alternator, driven by a diesel engine. The alternating current produced by this generator is converted to DC by integrated silicon diode rectifiers to feed all the DC traction motors. These DC traction motors drive the wheel of the locomotive.
We also use this machine in marine similar to a diesel-electric locomotive. We specially design the synchronous generator used in marine and navy with appropriate adaptations to the salt-water environment. The typical output level of a marine alternator is about 12 or 24 volt. In big marine sheep, more than one units are used to provide massive power. In this marine system, the energy produced by the alternator is first rectified then used for charging the engine starter battery and auxiliary supply battery of marine.

One of the primary uses of alternators is in the production of bulk ac power for commercial purposes. In thermal power plants, in hydel power plants, even in nuclear power plants, alternators only converts mechanical energy to electrical energy for supplying to the power system.


Alternators or synchronous generators can be classified in many ways depending upon their applications and designs.
The five different types of alternators include:

– used in modern automobiles.
– used in diesel electric multiple units.
– used in marine applications.
– used in electrical power generation plants as the main source of power.
– used for low band radio frequency transmission.
We can categorize these AC generators (alternators) in many ways, but the two main categories depending on their design are:

1.Salient Pole Type
2.Smooth Cylindrical Type

We use it as low and medium speed alternator. It has a large number of projecting poles having their cores bolted or dovetailed onto a heavy magnetic wheel of cast iron or steel of good magnetic quality.

Such generators get characterized by their large diameters and short axial lengths. These generators look like a big wheel. These are mainly used for low-speed turbine such as in hydel power plant.



We use it for a steam turbine driven alternator. The rotor of this generator rotates at very high speed. The rotor consists of a smooth solid forged steel cylinder having certain numbers of slots milled out at intervals along the outer periphery for accommodating field coils.

These rotors are designed mostly for 2 poles or 4 poles turbo generator running at 36000 rpm or 1800 rpm respectively.


Michael Faraday and Hippolyte Pixii gave the very first concept of alternator. Michael Faraday designed a rotating rectangular turn of conductor inside a magnetic field to produce alternating current in the external static circuit. After that in the year of 1886 J.E.H. Gordon, designed and produced first prototype of useful model. After that, Lord Kelvin and Sebastian Ferranti designed a model of 100 to 300 Hz synchronous generator. Nikola Tesla in 1891, designed a commercially useful 15 KHz generator. After this year, poly phase alternators came into picture which can deliver currents to multiple phases.

15/07/2019

What is mechanic

15/07/2019

Torque converter-Explained:
Torque converters are sealed units; their innards rarely see the light of day, and when they do, they’re still pretty hard to figure out!
Imagine you have two fans facing each other. Turn one fan on, and it will blow air over the blades of the second fan, causing it to spin. But if you hold the second fan still, the first fan will keep right on spinning.
That’s exactly how a torque converter works. One “fan,” called the impeller, is connected to the engine (together with the front cover, it forms the outer shell of the converter). The other fan, the turbine, is connected to the transmission input shaft. Unless the transmission is in neutral or park, any motion of the turbine will move the vehicle.
Instead of using air, the torque converter uses a liquid medium, which cannot be compressed – oil, otherwise known as transmission fluid. Automatic transmission cars use a torque converter. This article will discuss why automatic transmission cars need a torque converter and how a torque converter works.
The torque converter in an automatic transmission serves the same purpose as the clutch in a manual transmission.
The engine needs to be connected to the rear wheels so the vehicle will move, and disconnected so the engine can continue to run when the vehicle is stopped. One way to do this is to use a device that physically connects and disconnects the engine and the transmission – a clutch. Another method is to use some type of fluid coupling, such as a torque converter, which is located between the engine and the transmission.
There are three components inside the very strong housing of the torque converter which work together to transmit power to the transmission:
* Pump
* Turbine
* Stator
The pump inside a torque converter is a type of centrifugal pump. As it spins, fluid is flung to the outside, much as the spin cycle of a washing machine flings water and clothes to the outside of the wash tub. As fluid is flung to the outside, a vacuum is created that draws more fluid in at the center.
The fluid then enters the blades of the turbine, which is connected to the transmission (the spline in the middle is where it connects to the transmission.) The turbine causes the transmission to spin, which basically moves your car. The blades of the turbine are curved so that the fluid, which enters the turbine from the outside, has to change direction before it exits the center of the turbine. It is this directional change that causes the turbine to spin.
As the turbine causes the fluid to change direction, the fluid causes the turbine to spin.
The fluid exits the turbine at the center, moving in a different direction than when it entered. The fluid exits the turbine moving opposite the direction that the pump (and engine) are turning. If the fluid were allowed to hit the pump, it would slow the engine down, wasting power. This is why a torque converter has a stator.
The stator resides in the very center of the torque converter. Its job is to redirect the fluid returning from the turbine before it hits the pump again. This dramatically increases the efficiency of the torque converter.
In brief, the torque converter is a type of fluid coupling, which allows the engine to spin somewhat independently of the transmission. It is responsible for pressurizing automatic transmission fluid, a pressurization that supplies the force necessary to shift transmission gears.
A worn or dysfunctional torque converter can prevent transmission fluid from being properly pressurized, which in turn negatively impacts transmission gear function and operation. A systematic checkup by a professional is the best way to isolate the cause of the operating problems and recommend the most effective solution.
If properly tuned, this complex device can have a tremendous impact on your vehicle’s performance, economy and durability, and turn your automatic into a powerhouse!

13/07/2019

diesel power

24/06/2019

Valve settings in diesel engine 6cylinder
Inlet setting number is 15
Exhaust setting number is 25

11/06/2019

A valve adjustment (sometimes also called an overhead) is vital to the health of your diesel engine to ensure proper combustion. This is often an overlooked task for proper engine maintenance; however, neglecting your valves could lead to a lot of unwanted hassles like loss of power and decreased fuel efficiency.

When Diesel Engines Need a Valve Adjustment | Allstate Peterbilt Group

https://www.allstatepeterbilt.com › blog

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When Diesel Engines Need a Valve Adjustment | Allstate Peterbilt Group

https://www.allstatepeterbilt.com › blog

15 Dec 2017 · A valve adjustment (sometimes also called an overhead) is vital to the health of your diesel engine to ensure proper combustion. This is often an overlooked task for proper engine maintenance; however, neglecting your valves could lead to a lot of unwanted hassles like loss of power and decreased fuel effic

Allstate Peterbilt Group is a dealership located in St. Louis Park Minnesota. We're here to help with any automotive needs you may have. Don't forget to check out our used trucks.

11/06/2019

Exhaust gas recirculation (EGR), on dieselengines, can be used to achieve a richer fuel to air mixture and a lower peak combustion temperature. Both effects reduce NOx emissions, but can negatively impact efficiency and the production of soot particles.

Diesel exhaust - Wikipedia

https://en.m.wikipedia.org › wiki › Diesel...

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Diesel exhaust - Wikipedia

https://en.m.wikipedia.org › wiki › Diesel...

Exhaust gas recirculation (EGR), on diesel engines, can be used to achieve a richer fuel to air mixture and a lower peak combustion temperature. Both effects reduce NOx emissions, but can negatively impact efficiency and the production of soot particles.

Composition

Cyclone Raja was a severe tropical cyclone that spawned in the South Pacific in December 1986. It holds the 24-hour rainfall record of 674.9 mm (26.57 in) for the French Overseas Territory of Wallis and Futuna. After it was named on 23 December, it unexpectedly headed southeast toward Futuna. The ...

31/05/2019

what is the function of altanator ?

Alternator is a device, that change mechanical energy into electrical energy and charge the battery