The inlet valve closes at the end of this stroke.

At the end of this stroke, the exhaust valve closes, the inlet valve opens, and the sequence repeats in the next cycle.

The first part of the piston downstroke drew in a fuel-air mixture, then the inlet valve closed and, in the remainder of the down-stroke, the fuel-air mixture fired.

The PLC uses a digital output to open the inlet valve to fill the tank.

In steam engines the point in the piston cycle at which the steam inlet valve closes is called the cutoff and this can often be controlled to adjust the torque supplied by the engine and improve efficiency.

In order to prevent this from happening, a valve is fitted between the turbo and inlet, which vents off the excess air pressure.

The air is usually recycled back into the turbo inlet ( diverter or bypass valves ) but can also be vented to the atmosphere ( blow off valve ).

The T valve might be used to permit connection of one inlet to either or both outlets or connection of the two outlets.

The correct fuel level in the bowl is maintained by means of a float controlling an inlet valve, in a manner very similar to that employed in a cistern ( e. g. a toilet tank ).

As fuel is used up, the float drops, opening the inlet valve and admitting fuel.

As the fuel level rises, the float rises and closes the inlet valve.

There are two actuated devices: the inlet guide vanes that regulate airflow to the load compressor and the surge control valve that maintains stable or surge-free operation of the turbo machine.

Another form of rotary inlet valve used on two-stroke engines employs two cylindrical members with suitable cutouts arranged to rotate one within the other-the inlet pipe having passage to the crankcase only when the two cutouts coincide.

Reed-valve engines will run backwards just as well as piston-controlled porting, though rotary valve engines have asymmetrical inlet timing and will not run very well.

This helps scavenging when exhaust / inlet timing overlap is used and a wide speed range required, whereas poor poppet valve exhaust scavenging can dilute the fresh air / fuel mixture intake to a greater degree, being more speed dependent ( relying principally on exhaust / inlet system resonant tuning to separate the two streams ).

EGR valve on top of the inlet manifold of a Saab H engine in a 1987 Saab 90

The CVCC system had conventional inlet and exhaust valves and a third, supplementary, inlet valve that charged an area around the spark plug.

When the piston, propelled by steam, reached the top of the cylinder, the steam inlet valve closed and the valve controlling the passage to the condenser opened.

The village is situated on the Garden Peninsula where the Garden Creek flows into Garden Bay, a small inlet off the Big Bay de Noc, which opens onto Green Bay, on Lake Michigan.

Then the other piston opens the inlet slots.

Fossil Bay is an inlet that opens to the southeast.

The advancing of the inlet camshaft by 25 crankshaft degrees ( or 12. 5 camshaft degrees ) opens and closes the intake valves earlier in the inlet cycle.

As a result of the damming of the Veerse Gat inlet in 1961, the fishing fleet of Veere moved to a new home port at Colijnsplaat on Noord-Beveland.

Higher engine inlet air temperatures result in reduced power increases and an increased likelihood of engine damage resulting from detonation within the cylinders.

A leak will give a similar result to permanent set, but will be detectable by holding the volume in the pressurized vessel by closing the inlet valve for a period before depressurizing, as the pressure will drop steadily during this period if there is a leak.

From October 1956, directly as a result of experience gained in international rallying by Rootes ' competition department, the Rapier was fitted with the updated R67 engine on which the Stromberg carburettor was replaced by twin Zenith 36 WIP carburettors on a new inlet manifold.

As a result, some inlet cones ( for example, on the SR-71 ) are designed to move axially to maintain the shock-on-lip and allow efficient operation over a wider range of flight speeds.

Typically the 200 psi inlet water pressure is reduced to 95 psi discharge pressure as a result of the narrowness of the venturi in the eductor device.

As a result the exhaust and inlet manifolds were adapted so that more heat from the former warmed the latter.

The bay, protected by a narrow inlet that provides shelter from strong Indian Ocean winds, is believed to be the result of a submerging coastline or a drowned river valley that formed many peninsulas around the bay.

The metering unit for the Lucas mechanical fuel injection was rotated by gear and belt from the inlet cam, while the exhaust cam drove an alternator on the rear of the head.

The camshafts are continuously variable for increased performance, using a system very closely based on BMW's VANOS variable timing system for the BMW M3 ; it is a hydraulically-actuated phasing mechanism which retards the inlet cam relative to the exhaust cam at low revs, which reduces the valve overlap and provides for increased idle stability and increased low-speed torque.

The VVC system constantly alters the inlet cam period, resulting in a remarkably flexible drive-the torque curve of a VVC K-series engine is virtually flat throughout the rev range and power climbs steadily with no fall-off whatsoever until the rev limiter kicks in at 7, 200 rpm.

Most modern VW Group petrol engines now include VVT on either the inlet cam, or both inlet and exhaust cams, as in their V6, V8 and V10 engines.

Note position of inlet trumpets and cam covers on the side of the H16 engine.

The naturally aspirated engines also feature cam profile switching and variable track length inlet manifold.

The RB25DE and RB25DET engines also became equipped with NVCS ( variable inlet cam phasing ).

At maximum torque speed the control unit sets the " open " phase: cam advanced by 25 °, inlet casing long ducts ( Only 1. 8 / 2. 0 TS ).

At the maximum power speed the control unit sets the " closed " phase: cam in normal position, inlet box short ducts.

At idle speed the control unit sets the " closed " phase: cam in normal position and inlet box short ducts.

As with similar inlet cam phasing systems like BMW VANOS the phasing is returned to the retarded state at higher rpm to improve power and effiency as inlet gas dynamics change with rpm.

A high lift cam, 2 mm bigger inlet valves and 1 mm bigger exhaust valves were also fitted.

This L14 twin cam head engine has flat exit side exhaust ports, the early 12 bolt rocker cover and the coolant discharge on the inlet side of the head.