Volvo Truck Corporation

Volvo Lastvagnar Ab

Lennart Langervik

Stig Arne Svensson

Bengt Lassesson

Viktor Huggare

Thord M&aring;rtensson

Björn Jacobsson

Simo Kettunen

A valve arrangement is provided for supplying air to a combustion chamber of an internal combustion engine, the valve arrangement including a first valve, the first valve including a first valve head, a first valve stem and an internal cavity, which is partly located in the first valve stem and open towards a lower surface of the first valve head, a valve guide arranged to surround a portion of the first valve stem such that the first valve stem is movable in the valve guide along a longitudinal direction between an upper, closed position of the valve, and a lower, open position, in which open position air may be supplied to the combustion chamber past the first valve head, the valve guide including an air passage allowing supply of additional air to the combustion chamber via the internal cavity in the first valve, when the first valve is in its closed position. The valve arrangement includes a guide leakage preventing means for preventing liquid from leaking from a region externally of the first valve stem to the valve guide air passage.

Valve arrangement and valve guide

A control system for an internal combustion engine (ICE) is provided including a control unit configured for operating an electrically controlled valve for supplying compressed air to at least one cylinder depending on an operational mode for the ICE. A method for controlling such an ICE (), and a computer are also provided.

Control system and control method for an internal combustion engine

A valve arrangement for supplying air to a combustion chamber of an internal combustion engine includes a first valve, the first valve including a first valve head, a first valve stem assembly and an internal cavity, which is at least partly located in the first valve stem assembly, and a second valve partly arranged within the internal cavity of the first valve, the second valve including a second valve head and a second valve stem assembly, and being movable within the internal cavity between an upper, closed position and a lower, open position, wherein a junction seal extends over a junction between the first valve stem assembly and the second valve stem assembly when the second valve is in the closed position. A leakage preventing arrangement is arranged to hinder leakage of liquid from the outside of the junction seal from reaching in between the first valve stem assembly and the second salve stem assembly.

Valve arrangement

A valve arrangement for supplying air to an internal combustion engine includes a first valve and a second valve arranged within the first valve. A valve guide for use in a valve arrangement is also provided.

Thermostat valves are disclosed for guiding the flow of coolant in an internal combustion engine, which includes three channels with a central valve chamber, the first channel including a first valve seat, and in which the thermostat valve includes a valve housing mounted within the valve chamber and including an opening facing the second channel and including a second valve seat, a tubular valve body movably mounted with respect to the valve housing along a valve axis between a first end position in which the tubular valve body bears against the first valve seat such that the first and second channels are in fluid communication and the first and third channels are blocked, and a second end position in which the tubular valve body bears against the second valve seat such that the first and second channels are in fluid communication and the first and third channels are blocked, and a temperature sensitive switch for moving the tubular valve body between the first and second end positions, in which the valve housing also includes a peripheral casing wall extending from the attachment of the valve housing to the engine wall for attachment to the tubular valve body and a closed end wall portion such that when the tubular valve body is in the second end position the closed end wall closes the second opening of the tubular valve body.

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Onsala, Sweden

Lennart Langervik