Auto Sport

SOHC and DOHC

2011-10-04T17:46:00.000-07:00

SOHC stands for Single overhead camshaft, while the DOHC stands for Double overhead camshaft. Camshaft or Noken has a function to open the suction valve cover and exhaust valves. Duty suction valve for sucking fuel-air mixture into the combustion chamber. Conversely, the exhaust valve has a duty to distribute the remaining combustion to exhaust.
Actually the technology is not only a valve mechanism SOHC and DOHC, but still there is another system called the OHV (Over Head Valve). Mechanism of action of this valve is very simple and has high durability. Placement of its camshaft in the cylinder block is assisted valve lifter and push rod between the rocker arm. OHV mechanism is widely used by truck diesel engines that require only torque. Due to limited technological development, OHV system is rarely used anymore in gasoline engines.

Function Overhead Camshaft
In a car engine, overhead camshaft valve attached to the handlebars (valves). Note the picture above, the valve is shown by the blue ellipse circle. In the picture above SOHC engine configuration, there are 8 valve which is driven by 8 overhead. The movement of valve opening and closing overhead camshaft driven by a function to process the air intake and fuel for combustion in the cylinder and to exhaust the process of combustion air throw that led to the muffler / exhaust of your car.

SOHC vs. DOHC
As mentioned earlier, the DOHC and SOHC distinguished by the number of pairs of overhead camshafts on each cylinder. To know the advantages and disadvantages DOHC and SOHC, need to know first the concept of an internal combustion engine or engines which have the character of combustion in the engine itself, in this case occurred in the cylinder. The concept is, the more fuel and air that goes to the fuel, the greater the power of the engines. Conversely, the less fuel and air are burned, the less power generated. In this case, DOHC that has the number two overhead camshafts per cylinder pair (a pair more than the SOHC), has the ability to enter the fuel and air more than the SOHC, DOHC engine produces power that is greater than the SOHC engine. As a consequence, DOHC engine would be wasteful because the intake of more fuel than the SOHC engine. So it can be said with a term, "means power DOHC, SOHC economic means". DOHC engines are usually more expensive because it requires a number of parts more than the SOHC is more and more overhead camshaft valve. In addition, the amount of overhead camshaft which require more power also to move more. This will reduce the power generated from the machine itself, although not too much. So the power generated by the machine will be used to move the part a little more on the DOHC engine, although not significantly.

A New Design Honda Scooter 125cc Machine

2011-10-03T21:58:00.000-07:00

Honda says that the new 125cc machine has been equipped with idle stop system technology.
Honda claims the new machine is 25 percent more efficient than a conventional scooter machine with a cylinder capacity equal. Liquid-cooled, 125cc, 4-stroke, single cylinder, Honda revealed a low creation machine friction, lighter weight and compact dimensions.
The low friction and the resulting sound is the result of applying new technology techniques at offset cylinder and roller rocker arm, such as intelligent control.

In addition, the continuously variable transmission is also used with V-belt (V-Matic) with the ratio of the width of the rubber drive belt is more elastic.

The plan is environmentally friendly machine will be used in many models of Honda scooters around the world from 2012.

Development was performed to meet these requirements:

Powerful output and greater durability with an emphasis on practicality
Excellent fuel efficiency suitable for the next-generation global-standard engine
Contributing to CO₂ reduction on a worldwide scale by applying to global models
Realizing an affordable price

For the transmission model used is a model like the picture below

Combi Break System

2011-10-03T19:24:00.000-07:00

Combi Brake is a mechanical technology to distribute the braking force between front wheels and rear wheels by simply pressing the left brake lever only.
Combi Brake With this technology, the bike will stop in a shorter braking distance is more leverage with a uniform braking on both front and rear wheels together. The weight of the braking power of its core will be automatically split between front and rear wheels as needed on the motor braking.
Well Combi Brake is very suitable for use by novice riders as well as the weaker sex. Where with the Combi Brake technology will help novice riders to perform braking like a motorist who was Pro. Combi Brake will take over capability of the pro riders at the time of distribution of braking on the front and rear wheels, so that the novice rider, would be greatly assisted by the Combi Brake.

As for how the Combi Break System is as follows:
When the left brake lever (1) is pressed, then the equalizer style will work to distribute the pressure force had to be two: one to brake on the rear wheels (2) and the other toward the tipping lever (3) to suppress the knocker that will push the hydraulic piston (4) which of course will react to activate the front brake discs. In this process of braking power will be automatically divided on both the front and rear wheels. Well bottom line, however, lies in the mechanism that will distribute the force equalizer based on the moment of force due to differences in the length of the lever arm equlizer cable.

Making Machines Italia Ferrari 458

2011-09-12T19:58:00.000-07:00

Engine is the most important part for the car, because the machine functions as a heart. And as an exclusive nan expensive supercars, the Ferrari 458 Italian machines rely on handmade (handmade) are designed elaborately and carefully.

This own machine with a capacity of 4.5 liters V8 capable of spraying up to 562 hp power. The result, 458 Italian ampu lauched 0-100 km with just 3.4 seconds.

Assembling the machine itself is implemented in production facilities Ferrari in Maranello, Italy this manufacturer's engine build not just 458 Italians, but also build engines Maserati and Ferrari California.

Manufacture of precision machine relies entirely by human hands. Starting from making visible from making the crankshaft and block, where they have three categories of thickness, and will take the best.

Furthermore, the perforation cylinder liners and oil holes that use modern equipment that still worked handmade, without the robot. Fitting pistons done manually, with the thickness of the liner is maintained.

Then there is the stage of mounting the crankshaft, where the engine is almost strung intact. And completion stage, after the engine is assembled into the filling phase of the oil, and water coolers. Final stages of testing, after the engine directly mounted to the engine bay 458 Italy.

A replacement battery in a hybrid system, Flywheel Hybrid System for Premium Vehicles

2011-09-12T19:50:00.000-07:00

UK - A consortium succeeded in developing a hybrid system performance support tool nicknamed Flywheel Hybrid System for Premium Vehicles (FHSPV). Later, the system is also intended as a substitute for conventional batteries in hybrid technology.

The ability of the project is also supported by the UK government is demonstrated through the ARTEMIS system test cycle. Through this system, the device FHSPV which still form a 3D design can be seen its performance significantly.

In addition, devices that rely on stop and go system offers the mechanical power which is driven by the flywheel (flywheel) and capable of providing power to 80 hp.

The consortium was declared the technology is cheaper, lighter, compact and does not add to waste like batteries in hybrid systems today. Even this system is claimed to improve fuel efficiency up to 22.4 percent of regular gasoline vehicles.

Designed by Flybrid Systems, FHSPV made from carbon composite materials and operate in a partial vacuum system, which allows it to spin up to 60,000 rpm. How it works FHSPV is to restore power through the rear differential lines and CVT transmission systems such as berdeselarasi DRS in Formula 1.

When tested, the device with a weight of less than 90 kg is mounted adjacent to the rear axle. So when this FHSPV can be mounted on the spare tire space.

While the parties who helped develop this system is, Xtrac and Torotrak on the transmission. Engineering consultant who handles the system configuration and integration by Prodrive and Ricardo. Car Affairs, the consortium is supported by Jaguar, Land Rover and Ford.

Additional motorcycle seat designs for children

2011-09-11T21:34:00.000-07:00

seats for small children in motor vehicles had to be in its own design. Let alone to her motorcycle, to the car was supposed to children under three years old (toddlers) has the form of an additional seat of its own. . . what more precise motor that has a structure more simple sitting and prone. .. Well on the site there is a Japanese patent patent design seat / seat for children who are registered in the name BRIDGESTONE CYCLE CO and SUNNY WHEEL IND CO LTD

Honda NF12A1C

2011-09-11T21:05:00.000-07:00

Recorded since June 9, 2011 TPT of Honda Motor and Honda NF12A1C NF12A1CF out and generate production plans AHM information data as much as 42 thousand Honda NF12A1C and nine thousand NF12A1CF variants.

NF Code as Code Honda for variant DUCK, while number 12 indicates the engine of Public of the 125 cc while the A1 code is the code for honda motorcycle NEW VARIETY. one of which allegedly is a variant of the PGM Fi Injection carburetor option, it is marked with the code letters "F" on one of the codes.

Strengthen information is the motor that will be released will indeed resemble the Honda Biz 125 but with some modifications as detailed type rear tire ring 17 which is expected to be accepted by consumers Indonesia