HYBRIDCAR

Influence the Gas Mileage

Rated to run from 20 mpg to 60 mpg, hybrid cars are designed for maximum fuel economy. But aside from its second source of power, what other factors can influence gas mileage?

Here are those factors:

Size of the engine. Hybrid solves it by putting a small engine with an electric motor. Moreover, small engine has small cylinders that consume less fuel both at stop and while cruising. This makes hybrid cars more fuel efficient. Hybrid car engines are smaller and are significantly lighter, thus reducing the total weight of the car.

Driving condition (with respect to the hybrid car’s internal structure). A hybrid car can either be parallel or series. With a parallel drive train, the car runs more fuel efficient on the highway. Series hybrids on the other hand work well in stop-and-go traffic.

Car Design/Aerodynamics. When driving at high speeds, the car’s engine works more because it has to push the car through the air. This is called aerodynamic drag. Hybrid cars work well both at slow and high speed because it’s design to cut through air that reduces the drag, thus increasing fuel economy. Low-rolling resistance tires, which are stiffer and inflated to higher pressure can further cut the drag and increase the fuel mileage of the car.

Vehicle Weight. When the car is heavy, the engine has to inject more fuel to the cylinder in order to push it forward. So in order to increase fuel economy, hybrid cars are made with lighter materials such as magnesium and aluminum or composite materials like carbon fiber.

Driving habits. Whether you are driving a hybrid or not, driving habits can definitely influence the gas mileage of your car. Hard braking and abrupt acceleration wastes a lot of energy. Abrupt acceleration on the other hand requires more power from both the electric motor and the combustion engine which equates to more fuel consumption.  To increase gas mileage, anticipate braking distance, step on the brake softly, and accelerate gently.

Gas Mieage Indicator

The Internal Combustion Engine

By:  Lestari

BMW Hydrogen Engine

The engines in vehicles is a rather broad but interesting subject. People may be amazed to know that the ones currently in use today were drawn on several hundreds of blueprints before they were distributed to the market. The present models are the result of over a century worth of brainstorming and experience and will further influence the models of the future.

What is the ICE?

ICE stands for internal combustion engine wherein the combustion of fuel and an oxidizer occurs. The combustion chamber is the space where everything happens causing an exothermic reaction that produces gas at a high pressure and temperature. The expanding hot gases will directly put pressure on solid engine parts causing them to move. Pistons, rotors or the engine itself then begins movement which propels the entire vehicle.

The very first models of the ICE ran on an air/fuel mixture rather than compression. The initial part of the intake stroke sucks or blows in the mixture. Modern ICEs already incorporates in-cylinder compression. The engines were used in a variety of methods and industries like generators, boats, aircrafts and most particularly, automobiles.

The Operation

The internal combustion engine operates using a four-stroke cycle or the Otto cycle. The cycle involves four phases namely: induction, compression, power and exhaust. All of these aim to create an exothermic chemical process to start vehicle propulsion. During induction, oxygen or other oxidizers are introduced into the cylinder to act with the fuel. Compression then begins as the gases start a reaction that continuously increase temperature and pressure within the cylinder.

When enough pressure is applied on the corresponding engine parts, the engine begins to gain power through movement coming from direct force application. The aftermath of the entire compression process will lead to exhaustion of byproducts like carbon monoxide, carbon dioxide and nitrogen wastes. These gases are freely emitted into the atmosphere. The combustion process is started through engine ignition using the spark ignition method or the compression ignition system.

Vehicle Hybridization

FCX Clarity

All of us cannot tolerate the continuing rise in gas prices. Customers today are looking for alternatives to save on fuel costs. Fortunately hybrid vehicles have given us the option to save gas and help the environment. Hybrids are no longer restricted to a conventional 4 door sedan. Hybrid SUVs are also out on the market today to meet the demands of the customers.

Ever since the Toyota Prius came out, other automobile companies have devoted their research in developing their own hybrid technology. Ford and Honda have their own hybrid system incorporated into new models. Hybrid vehicles are expensive for now but development in the future will make them more accessible and affordable for the general public. The technology is still going through development to be able to compete with the fuel dominated automobile industry.

Different Types of Hybrids

Hybrids have different types. Their structures may differ in some ways but generally they have a rechargeable battery on board or an electric motor that works with an internal combustion engine to move the vehicle. In other vehicles they can operate a rechargeable battery alone but there are many limitations to this type which has prevented it from being widely manufactured. These vehicles are primarily moved by an electric motor and only use the diesel engine for high speeds.

There are different degrees of hybridization. Full or strong hybrids that can run just by using an engine, its batteries are a combination of both. Examples of this are the Toyota Prius and Ford Escape. These two vehicles can move by battery power alone and be assisted by their diesel engines when needed.

Power assist hybrid uses its engine for primary power, coupled with an electric motor to boost torque. The electric motor is connected to a power train and is mounted between the engine and the transmission.

Mild hybrids are conventional vehicles with huge starter motors. This allows the engine to be turned off during idle periods and coasting but still enable the vehicle to start quickly. Most people do not consider this type to be a hybrid but it can still save fuel costs. It’s just not as efficient as full hybrids.

Hybrid vehicles are perfect for suburban environments where there is a lot of traffic. If you really look at it the most important is not horsepower but gas mileage.