Turbocharged i.c. engine with variable volume exhaust manifold to reduce turbo-lag

摘要

The exhaust manifold has a cylindrical aperture which is a close fit around an actuation rod or shaft which is moved forwards and backwards by a solenoid in order to maintain the correct volume / pressure of exhaust gasses which keep the turbo charger at peak operating conditions to eliminate or counteract, as much as possible, the effects of turbo lag. A pressure sensor monitors the pressure in the exhaust manifold at all times and signals the solenoid to advance or retract the actuation rod or shaft in order to maintain the peak operating conditions required by the turbo charger; ie when low pressure is sensed within the manifold the rod or shaft is advanced to reduce the volume hence instantly increasing the pressure and when pressure too high the rod or shaft is retracted thus reducing pressure hence maximizing the power output of the engine at all times required. An on/off switch may be provided so that the user may start the engine with the invention deactivated if desired.