Patents Assigned to Gentech Design Limited
  • Internal combustion engines
    Patent number: 6189318
    Abstract: An internal combustion engine is provided with a vacuum pump (17) to remove burnt gases form the engine cylinders during an exhaust stroke. The vacuum applied by the pump (17) is sufficient to remove the gases during an exhaust stroke and also apply a force to lift the piston. A certain amount of torque is therefore generated during the exhaust strokes. In a similar manner and to similar effect a compressor (18) is provided to force fuel into the cylinders during induction strokes and also create a certain amount of positive torque.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: February 20, 2001
    Assignee: Gentech Design Limited
    Inventor: Steven Valisko
  • Exhaust manifold device
    Patent number: 6119454
    Abstract: An exhaust manifold device is provided to allow air to enter an exhaust manifold during normal operation of an engine to prevent exhaust gases being sucked into the cylinders via exhaust valves. Air can be supplied via valves (18 and 21) to the exhaust manifold as required and is supplied to the valve (21) at pressures, above atmospheric pressure, that increase with engine speed.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: September 19, 2000
    Assignee: Gentech Design Limited
    Inventor: Steven Valisko