The high voltage generated in the secondary winding of the ignition coil produces a spark between the center and ground electrodes of the spark plug in order to ignite the air-fuel mixture that is compressed Read more Spark Plug
Automotive Engine
Engine Piston Ring
1. Description
The piston ring is designed to prevent pressure from leaking out of the gap between the piston and the cylinder. There are three piston rings that function to keep the combustion chamber Read more Engine Piston Ring
Platinum/Iridium-tipped Plug
On the platinum-tipped and iridiumtipped spark plugs, the center electrode and the opposing ground electrode are covered with a thin platinum or iridium tip. Therefore, these spark plugs provide a longer Read more Platinum/Iridium-tipped Plug
Engine Valve Mechanism
The valve mechanism opens or closes the intake valve and exhaust valve at the proper timing in order to draw the air-fuel mixture into the cylinder and discharge the combustion gas into the outside.
Ignition Performance
The following factors affect the ignition performance of a spark plug:
1. Electrode shape and discharge performance
Rounded electrodes make discharging difficult, while squared-off or pointed electrodes Read more Ignition Performance
Engine Scissors Gear Mechanism (Sub-gear Mechanism)
There is a scissors gear (sub-gear) on the driven gear of the camshaft for the compact DOHC which serves to reduce gear noise associated with changes in torque. The sub-gear is pushed toward the rotational Read more Engine Scissors Gear Mechanism (Sub-gear Mechanism)
Automotive Igniter
Outline
The igniter carries out the precise interruption of the primary current that flows to the ignition coil in accordance with the ignition signal (IGT) that is output by the engine ECU.
Necessity of Ignition Timing Control
In a gasoline engine, the air-fuel mixture is ignited to cause combustion, and the force that is generated by the explosion causes the piston to push downward. The thermal energy can be most efficiently Read more Necessity of Ignition Timing Control
Automotive Ignition System
The three essential elements of a gasoline engine aregood air-fuel mixture, good compression, and good spark. The ignition system generates a powerful spark through proper ignition timing in order to ignite Read more Automotive Ignition System
Engine Temperature-controlled Fluid Coupling
1. Overview
The V-belt driven cooling fan increases in fan speed in proportion to the increase in engine speed. For this reason, the fan speed of the cooling fan with the temperature control fluid coupling Read more Engine Temperature-controlled Fluid Coupling