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引擎

 
  主題:認識車輛術語-Powertrain  
(一般會員)
悉辰
chen055175
IP: 發文時間:2009-06-10 10:38:03
會員圖片
03-0000000
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認識車輛術語:
MULTIPORT (MULTIPOINT) FUEL INJECTION
Fuel injectors are mounted directly in the intake manifold close to the intake ports of each cylinder. Improves fuel distribution and engine breathing for improved efficiency and reduced exhaust emissions.
認識車輛術語:
HORSEPOWER (HP)
A measure of the amount of work that can be done in a certain amount of time. One horsepower is equal to 550 foot-pound (ft-lb) of work per second or the energy needed to lift 550 pounds one foot off the ground in one second, or one pound 550 feet up in the same time. The horsepower of an engine depends upon the torque and speed of the engine.
Brake hp - The actual horsepower delivered by the crankshaft and measured by means on an electric dynamometer or by use of a brake
Gross hp - The brake horsepower of an engine with optimum ignition setting (manual instead of automatic advance) and without allowing for the proper absorbed by the engine's accessory units such as the fan, water pump, generator and exhaust system. Gross torque is used to determine gross horsepower.
Net hp - The brake horsepower remaining at the flywheel of the engine to do useful work after the power required by the engine accessories (fan, water pump generator, etc.) has been provided.
認識車輛術語:
TORQUE
Engine torque is the amount of twisting effort exerted by the crankshaft by
an engine.The unit of measure is a pound-foot, which represents a force of
one pound acting at right angles at the end of a arm one foot long.
Gross - The maximum torque developed by an engine without allowing for the power absorbed by the engine's accessory units such as the fan, water
pump, generator and exhaust system. Gross torque is used to
determine gross horsepower.
Net - The torque available at the flywheel of the engine after the power required by the engine accessories (fan, water pump, generator, etc.) has
been provided.
認識車輛術語:
SOHC (SINGLE OVERHEAD CAM)
A single overhead cam engine has only one camshaft per cylinder head. The cam may act directly on the valves, or rocker arms may transfer motion to the valves.
DOHC (DUAL OVERHEAD CAM)
A dual overhead cam (DOHC) engine has two camshafts per cylinder head. One can operates the intake valves, the other operates the exhaust valves.
認識車輛術語:
SENTRY KEY ENGINE IMMOBILIZER
Uses an engine key that has an embedded transponder with a preprogrammed security code to discourage vehicle theft. When the key is inserted into the ignition, the controller sends a random number to the transponder and the engine is allowed to start. If an incorrect key is used, the engine will shut off after only a few seconds.
認識車輛術語:
CLUTCH
A friction mechanism that allows for the measured interruption of power from the engine to the rest of the driveline. It generally consists of a disc and pressure plate assembly whose matchup is controlled by the action of the clutch pedal. The link may be either mechanically or hydraulically made.


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