Category: Automotive

What are the Features, Working and Advantages of Green Engines

As the name says, ‘Green Engine’ is pollution free engines which is invented with new features. Green engine is a internal combustion engine which has six phases. It is an amazing discovery and it is also environmental friendly engine.

The internal combustion engine used in the preparation of green engine have some modifications done in its design and parts. The efficiency of this engine is very high compared to the other conventional or traditional engines. This engine is suitable to the present environmental conditions.

Why green engine?

  • The main purpose behind the out come of the green engine is energy crisis which is the alarming factor that world is facing today.
  • The environmental problems like release of harmful gases can be avoided through this green engine.

These major factors or the global issues that we are facing today lead to the invention of green engine which is very useful today.

Technical features of green engines:

  • The air intake is direct without any inlet valves
  • Injection of the fuel can be done directly
  • It has the capacity of super air-fuel mixing
  • It has the lowest surface to volume ratio
  • The combustion time is controllable
  • The engines works on multiple power pulses
  • Working temperature of the engine is high
  • Expansion ratio of the engine is high making the waste gases run away from the engine
  • As the working of the engine is smooth the vibration of the engine is eliminated
  • The size of the engine is small and have the limited parts

Working of green engines:
The working of green engine involves six phases:

1. Intake:
The air in the green engine arrives directly through air intake pipe if the air inlet pipe, inlet valve and the throttle is not present in the air intake system.

2. Compression:
The rushing air which is coming from the duct is pushed in to rotor were small chambers are present and the chamber is very small. This type of compression is efficient.

3. Mixing:
The chamber which is in front of the fuel injector sprays fuel in the compressed air and the fuel gets mixed up with the air because of the shape of the chamber.

4. Combustion:
The volume of the combustion is constant and the combustion time is controllable. The chamber rotates here and reaches the end of the path. The spark then flies from the plug in to the mixture of air-fuel.

5. Power:
The gas which is expanded rushes out of the chamber through the opening which is narrow.

6. Exhaust:
The exhaust gases gives less amount of heat i.e, heat energy is less as the thermal energy is utilized most of the time.

Advantages of green engines:

  • Efficiency of the green engine is high
  • Highly reliable when compared to other conventional engine
  • Cost of the engine is low
  • Engine manages the use of hydrogen fuel which is eco-friendly
  • Operation of the green engine is smooth
  • Multiple fuels can be used to run this engine
  • Emission of the gases is merely zero
  • The accelerating response is very fast

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Different Types of Differentials

A differential is a group of gears that lead the wheels to drive at diverse speeds when the vehicle is going around the corners. In other words, a differential makes the wheels spin at two different speeds. The differential does this using a set of gearwheels. In this article, we discuss different types of differentials used.

What actually happens is that, if one of the wheels slows down in spin while the vehicle is taking a turn, the wheel spin is replaced by a turn force that exerts itself on the slower spinning wheel. Thus it does not affect the rotation of the main gear wheels in the differential, allowing them to spin in the same speed, despite itself getting slowed down.

When we think of wheels spinning in different speeds, there is an important distinction that has to be made. That is, the difference between driving and driven wheels (free wheels that are not attached to the drive-shaft). When the vehicle is taking a turn, there is still difference between two driven wheels, but there is no drag on the ground, because they are free. But in case of driving wheels, without a differential, both the wheels will be rotated with the same speed and they would experience drag.

Front engine, Front-wheel drive:
In a front engine, front-wheel drive or a rear engine, rear-wheel drive, there is no need of a driving column that runs through the floor of the vehicle. The differentials directly receive rotational input from the engine and transfer it to the wheels.

Front engine, Back wheel drive:
In this case, the differential receives rotation from the drive shaft which connects the engine to the rear.

Four wheel drives:
In a two wheel drive system, only two wheels are powered, and the other two are free and driven. This means that torque generated by the engine is received only by two wheels. So, to increase the torque, the other two wheels have to be powered also. When all the four wheels of a vehicle is powered, it is called a four-wheel drive There are two kinds of four-wheel drive systems, the 4WD and

The All-wheel drive.
The two kinds of four-wheel drives arise out of two technical possibilities. 1) All the four wheels are powered, that is, power is distributed to all the wheels, 2) All four wheels are powered with a differential between them, that is, the rear axle is made able to rotate at speeds without any regard to the front axle or vice-versa while making a turn, or while driving in a complex terrain.
But in addition to the benefits, a lot of other complications arise when extra differentials are introduced. Usually these are met with the addition of supportive mechanisms.
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Tire Tread Patterns: How they are Useful

Tread design can impact your car in several ways, including road noise, ride quality, and perhaps most importantly, handling and traction. Tread patterns matter the most and influence the overall performance of the vehicle in adverse conditions. If there had been no dirt, snow or wet conditions, on the roads, tires would be without treads.

Symmetrical Tire Tread Patterns
Symmetrical tire pattern is the most common tire pattern today. They have a repetitive pattern on both the halves of the tires. A good advantage of a symmetrical tire pattern is that they can be used at all the wheel positions in the vehicle. As long as the sizes of the wheels on the front and rear of the vehicles are identical they can be rotated around.

Asymmetrical Tire Tread Patterns
Asymmetrical tire patterns are designed in order to fit both dry and wet conditions of the road. The outsides of the tires will be hard in order to facilitate good turning and the insides will have wet weather driving features such as patterns to displace water. The tire walls are designated either as ‘inside’ or ‘outside’. This is to ensure that the right portion of the tread is in the right position. They can also be used at any position on the vehicle given that, they are installed with the right pattern facing the right direction.

Directional Tire Tread Patterns
Directional tire tread patterns have ‘V’ shaped blocks pointing towards the direction of rotation. These blocks are the best among the patterns to eject water. The ‘V’ block effectively deviates the water away from the path of the tire, and sipings channel them off the tire. On water, no other pattern performs as good as a ‘V’ pattern. However, there is a disadvantage while rotating tires in this pattern. They can only be rotated among the front and rear wheels of different axles. But when that is done, the tires have to be removed from the wheels and refitted, which is expensive.

Directional and asymmetrical tire tread patterns
The Directional and asymmetrical tire patterns combine both water displacement and good performance in dry conditions. For this, The ‘V’ blocks are present in the center, but patterns surrounding the center line are asymmetrical. These tires are also designed to be rotated between the same side. But in cars, even this is not possible because of differing tire sizes.
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Preparing Your Car for Winter

Freezing temperatures and cold weather may cause parts of your car to wear more easily than they may in other weather conditions. It can cause havoc in the performance of your car if you don’t give a maintenance session before winter season. This article discusses about how to prepare your car for winter.

1) Check for anti-freeze
This is the most important step when preparing your car for winter. Your car contains a 50:50 mix of water and anti-freeze. Make sure that the mixture is in the same ratio. Having less than 50% of anti-freeze and make your engine vulnerable to freezing. Many car servicing and repair centers check for this mixture or even you can buy a tester for checking this mixture.

2) Inspect your tires
Inspect tire pressure. In cold weather, the tire pressure tends to drop. Keep your tire pressure according to the manufacturer’s recommended pressure that will help you in handling your car easily and drive safer on roads. It also helps you save money by improving fuel economy.

3) Replace your wipers
Faulty windshields can have a huge impact on your ability to see in wet weather conditions. So, make sure that your wipers are in good condition. In case, your wipers are twisted, bent or are not able to clear the windshield properly, you need to replace them.

4) Check for windshield washer fluid
Visibility is one of the important factors to be considered when driving in wet weather condition. Salt build-up and precipitation can cause havoc in the functioning of windshield. Therefore, see to it that you not only check the condition of your windshield wipers, blades but also check the wiper fluid and if required fill the wiper fluid reservoir.

5) Consider snow tires
It is recommended to look for snow tires (winter tires) depending on the location you stay and the time you will be spending in snow. If the area you are living in gets a significant amount of snow fall, it is worth getting snow tires. These tires have deep groves that will provide more traction than all season tires. You will be more confident and feel safe because of the ability of these tires to control.

6) Make sure that you have an emergency kit in your car
An emergency kit well stocked can be life-saving if you find yourself stopped in the middle of the road. A proper winter emergency kit includes:

  • One blanket.
  • Extra warm clothes including boots, hats and gloves.
  • Food and drinking water.
  • A flashlight.
  • Extra windshield wipers.
  • A first aid kit.
  • Windshield washer fluid.
  • A bag of sand that will help you in giving extra traction if you get stuck.

Incorporating these tips to prepare your car for winter will help your car run smooth and safe throughout winter season.
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Maintenance Tips for Your Hybrid Car

A hybrid car will have a gas engine and an electric motor. Many people know this. Some people think for both electric motor and gas engine separate maintenance is required. In reality, most hybrid cars do not need any of such twice maintenance.

  • Brakes: The braking system in the hybrid cars are unique from the standard gasoline cars. The regenerative braking system in the hybrid cars collects the energy while braking and convert it into electricity. The battery can charge and recycle by coasting to a stop as coasting can generate an excess amount of kinetic energy. This system reduces the friction and heat. Consequently, it will have excessive wear and tear on the car’s brake pads and rotors.
  • Battery: The hybrid car’s main battery is expensive and is large in size. The cost of the paper will be around a few thousand dollars. These batteries’ design is different from the standard car batteries. Hybrid batteries are designed to last as long as the car works. The warranties are even longer periods when compared to other car batteries. In cold weather, allow your car and the battery to warm up properly. Hybrid cars can operate better when the weather is warm. Allowing some time to warm up will help you lower wear from the cold.
  • Drive train: The transmission, the electric drive motor and the internal combustion engine are connected mechanically together. The drive train in the hybrid cars is much different. A malfunction in any one of the components will affect the other components functions. You can change the air filters and spark plugs, and you can check the transmission fluid. However, if there is any serious problem, consult the professionals.
  • Electronics: The electronic modules in the hybrid cars are complex. They control the electric drive motor for regenerative braking and propulsion. Both these systems generate enormous heat. To control the heat, they have their own cooling systems. Charge and discharge rates are regulated by the battery control modules. These systems employ both cooling and heating systems to make sure that the system operates in all conditions consistently. You can do some simple maintenance for them. When you are taking care of engine cooling system’s regular maintenance, check the clamps, pipes, and individual hoses. In addition, check any additional filters that are using on the battery and the motor heating or cooling system.
  • Try to reduce the carrying of heavy weights on your hybrid car. Weight is one of the factors that decrease the mileage of the car. It also causes more stress on your car’s engine.

Routine maintenance like tire rotations, oil changes, tune-ups, etc. will not differ in the hybrids from those gasoline-run cars. Stick to your scheduled maintenance plan that recommended by your car manufacturer. Your driving habits also impact on the maintenance schedule.
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