Abstract:
The invention relates to a control system (202) for an internal combustion engine (ICE) (200) comprising an air storage container and a valve system for boosting intake air pressure in situations where the demand cannot be fulfilled by the turbocharger. The invention also relates to a corresponding method for controlling such an ICE (200) and avoiding turbo-lag, and to a thereto related computer program.
Abstract:
The invention relates to a valve arrangement for supplying air to an internal combustion engine. The valve arrangement comprises a first valve and a second valve arranged within the first valve. The invention also relates to a valve guide for use in a valve arrangement.
Abstract:
The invention relates to a valve arrangement (200) for supplying air to a combustion chamber of an internal combustion engine, said valve arrangement comprising a first valve (206), said first valve (206) comprising a first valve head (208), a first valve stem assembly (212) and an internal cavity (224), which is at least partly located in the first valve stem assembly (212), said first valve (206) being movable 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 (208), a second valve (226) partly arranged within said internal cavity (224) of said first valve (206), said second valve (226) comprising a second valve head (228) and a second valve stem assembly (232), and being movable within said internal cavity between an upper, closed position, in which closed position said second valve head (228) is in contact with an inner surface (230) of said first valve head (208), and a lower, open position in which open position additional air may be supplied to the combustion chamber via said internal cavity (224) past the second valve head (228), wherein a junction seal (223) extending over a junction between said first valve stem assembly (212) and said second valve stem assembly (232), when said second valve 226 is in said closed position. A leakage preventing means (400) is arranged to hinder leakage of liquid from the outside of said junction seal (223) from reaching in between said first valve stem assembly (212) and said second valve stem assembly (232).
Abstract:
The present disclosure relates to a valve arrangement (200) for supplying air to a combustion chamber of an internal combustion engine, said valve arrangement comprising a first valve (206), said first valve (206) comprising a first valve head (208), a first valve stem (212) and an internal cavity (224), which is partly located in the first valve stem (212) and open towards a lower surface of the first valve head (208), a valve guide (214) arranged to surround a portion of said first valve stem (212) such that said first valve stem (212) is movable in said valve guide (214) 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 (208), said valve guide (214) comprising an air passage (242) allowing supply of additional air to said combustion chamber via the internal cavity (224) in said first valve (206), when said first valve (206) is in its closed position. The valve arrangement (200) comprises a guide leakage preventing means (300´, 300'') for preventing liquid from leaking from a region (301) externally of said first valve stem (212) to said valve guide air passage (242).
Abstract:
The invention relates to a valve arrangement for supplying air to an internal combustion engine. The valve arrangement comprises a first valve and a second valve arranged within the first valve.