| 摘要 |
<p>An exhaust gas control system for connection to an inlet port of a cylinder (2) of a spark ignition engine. The control system comprises a plenum chamber (8) having an air input port and an air output port (4) connected to the cylinder inlet port via a primary throttle (7); and a secondary throttle (10) to control air flow into the plenum chamber (8).</p> |
