HCCI
Homogeneous-Charge Compression Ignition - method for measuring gas temperatures was developed so that conditions within a combustion chamber could be accurately analyzed for the purpose of making fuel-efficient, clean-emission engines commercially viable.
HCCI engine is an engine which ignites by taking in an air-fuel mixture like a gasoline engine and uses high-compression like a diesel engine. |
|
HCCI Engine
HCCI engine is an engine which ignites by taking in an air-fuel mixture like a gasoline engine and uses high-compression like a diesel engine. It is an example of an ideal internal- combustion engine which is able to combust even extremely thin fuel. In order to actualize this technology, it is necessary to continually adjust fuel thickness and the gas temperature within the combustion chamber to optimum levels.
:: Click for detailed HCCI Engine information |
|
HDC
Hill Descent Control - A driver assistant system in four-wheel drive vehicles, can be activated with the press of a button. When travelling at less than 35 km/h, HDC assists the driver by reducing to a constant speed of approx. 7 km/h, or 6.5 km/h when reversing. The brake lights come on automatically to warn any drivers situated behind the vehicle. The accelerator and tempomat can be used to vary speed between 6.5 and 25 km/h, but if the driver wants, they can of course move faster or slower: HDC then goes into standby mode. It is deactivated once your speed goes above 60 km/h.
:: Click for detailed HDC information |
|
HDi
High-Pressure Direct injection - Under this system, the fuel (Diesel) is injected under high pressure directly into the combustion chamber. The HDI badge, therefore, identifies both this new type of engine and those cars in the Peugeot diesel range that are equipped with the HDi system.
:: Click for detailed HDi information |
|
Head-Up Display
The digital projection of pertinent data (speed) onto the lower portion of the windshield on the driver's side. The driver does not have to take his eyes off the road to read his instrument panel. |
|
Headlights - Taillights
The lights on your car are of vital importance. They are one of the most crucial safety items, just like the brakes or steering system. While having one light such as a taillight or headlight burn out won't mean you'll lose control of your car, it's still important in terms of your being able to see where you're going and others being able to see you.
The inspection of vehicle lighting begins with the periodic checking of operation. Of course, headlights are easy. For taillights, you might need someone to stand behind the vehicle while you operate the running lights, brake lights and turn signals. You can also check for the function of these items by backing the vehicle up near a window and looking at the reflection through the back window. Your car's owner's manual is one of the most important tools for replacing vehicle lighting. You don't need to run off to the dealership just to replace a taillight, headlight or any other light in your car. Merely take a look at the manual, and it will tell you how to access the lights and the type of replacement to acquire. Most auto parts stores stock a full line of vehicle lights.
:: Click for detailed Headlights - Taillights information |
|
Headlights - Xenon
Also Known as HID (High Intensity Discharge) lights. Named for the inert gas they employ to amplify light produced by electricity jumping between two electrodes. HID lights don’t use a filament, as do incandescent headlights, and they tend to last two to three times longer. They also provide much more uniform intensity. Aim a set of xenon headlights at a wall, and you’ll see they define a sharp line at the top of the projected light pattern rather than the gradual fade common to conventional headlights. HID lights produce ultraviolet as well as visible light, which makes reflective highway signs glow more brilliantly.
:: Click for detailed Headlights - Xenon information |
|
Heated Intake
An anti-pollution device to help vaporize the gasoline supplied to a cold engine. The system consists of an air cleaner with a thermostat and a hot-air pipe connected to a heat stove on the exhaust manifold. When the engine is cold, the thermostat closes a damper, shutting off the air passage into the air cleaner from the engine compartment. All the air going into the air cleaner passes through the hot-pipe connected to the heat stove. Thus hot air is supplied to the carburetor almost as soon as the engine starts. As the engine warms up, the thermostat opens to the damper so that the air is then taken from the engine compartment and not from the heat stove. |
|
Heater Core
The heater core works in conjunction with your engine's cooling system. The function of the cooling system is to remove heat from the engine, and it does this for the most part by sending the heated anti-freeze to the radiator located in the front of the car. The position of the radiator allows outside air to blow across the radiator thus cooling the anti-freeze.
The anti-freeze is then sent back to the engine. Hot anti-freeze is circulated throughout the cooling system by the radiator and heater hoses. Think of the heater core as a small radiator located inside the dashboard of your vehicle.
:: Click for detailed Heater Core information |
|
HICAS
HICapacity Active Suspension - Nissan's current version of 4WS. There are 3 versions of HICAS in various stages of development, all of which are stability type systems only. A. HICAS -- Stability type system applied to the rear wheels. In production on the Nissan Skyline Coupe in Japan since 1985. B. HICAS II -- Same as HICAS except with "phase delay;" note: also includes opposite phase steering at high speed built into the system logic which delays turning the rear wheels to improve vehicle turn-in. This "phase delay" also includes opposite phase steering at high speed. C. Super HICAS--same as HICASII except front wheels also have some elements of active control.
:: Click for detailed HICAS information |
|
HID
High Intensity Discharge - headlamps, halogen bulbs are replaced by xenon gas bulbs, which last longer and use less energy. The beam they produce is more than twice as bright as conventional headlamps and can be focused into a precisely defined beam that won't dazzle other drivers. |
|
Hitch Ball
The hitch ball connects the trailer to the tow vehicle hitch and provides the means by which the trailer pivots during cornering. Available in a number of sizes, it must correspond to the trailer coupler size. |
|
HPS
Head Protection System - A unique type of curtain airbag developed by BMW. This type of curtain (tube) airbag is different because instead of being a rectangular (blanket-type) airbag attached to the roof rail and hidden by the headliner, it is a tubular airbag that connects to the A-pillar and attaches back near the C-pillar.
:: Click for detailed HPS information |
|
HSD
Hybrid Synergy Drive - is the combination of components that enables hybrid cars to draw power from both electric and petrol motors, as well as to store energy generated during braking. This energy comes from the heat dissipated from the brakes and would otherwise be wasted. The combination of electric and petrol power results in a remarkably smooth, quiet drive. At slow speeds, the petrol engine isn't used and you can hardly hear the car running. When you demand power, there is even more available than you'd expect. |
|
HUD
Head-Up Display - is any transparent display that presents data without obstructing the user's view. Although they were initially developed for military aviation, HUDs are now used in commercial aircraft, automobiles, and other applications.
:: Click for detailed HUD information |
|
Hydrocarbon
Any compound composed of hydrogen and carbon, such as gasoline and other petroleum products Various hydrocarbon by-products are produced when gasoline is burned in an engine and these compounds constitute one of the ingredients of photo-chemical smog. |
|
