Purpose, Function
Valve
The intake valve is pressed down by the cam, the intake air passage is opened, and air is introduced into the cylinder.
The exhaust valve is pressed down by the cam, the exhaust air passage is opened, and combustion gas is exhausted from the cylinder.
Valve spring
The valve spring adheres to the valve seat by pulling up the valve by spring force, and air tightness in the combustion chamber is maintained.
Valve seal
The valve seal prevents engine oil from entering combustion chamber through the valve guide, and engine oil consumption is suppressed.
Valve guide
The valve guide maintains the valve stem to open and close the valve smoothly.
The valve guide cools the valve by transmitting valve heat to the cylinder head.
Construction
The valve, valve spring, valve seal, and valve guide are assembled to the cylinder head as a single unit.
The sliding resistance has been reduced by setting the valve spring load to the required minimum.
The intake valve and exhaust valve are subjected to a salt-bath, soft-nitriding treatment to enhance wear resistance.
Unequal pitch valve spring has been adopted. In addition, the upper diameter is smaller compared to the bottom diameter.
The valve guide is made of sintered alloy with excellent wear resistance.
Down Switch [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
The down switch detects the shift down operation of the selector lever.
The down switch signal is sent to the TCM via CAN and is used for manual
shift control and engine-transaxle integration control.
Construction
The down switch is installed to the se ...
Tcs Off Switch, Tcs Off Indicator Light
Purpose/Function
The TCS OFF switch, located on the dashboard, allows for optionally enabling/disabling
the TCS control at driver discretion.
The TCS OFF indicator light, built into the instrument cluster, informs the
driver that TCS control has been disabled by operation ...
Check Fuel Cap Warning Light
Purpose/Function
The check fuel cap warning light is built into the instrument cluster.
If the PCM detects that the fuel cap is open, the light illuminates to warn
the driver that the fuel cap is open.
Construction
Built into the instrument cluster.(See INSTRUMENT CLUS ...