| 摘要 |
<p>To enable achievement, in an I.C. engine having an exhaust-driven turbo-charger, of a desired booster rate, and thus of a desired overall compression ratio, more particularly at low engine speeds and even at the moment of starting, additional operating gas is made available for the turbo-charger by a by-pass from the outlet of the turbo-charger compressor to the inlet of the turbo-charger turbine downstream of the engine and the operation of an auxiliary burner for increasing the supply of driving power to the turbo-charger turbine, utilizing for its combustion such by-pass air and optionally also residual oxygen in the engine exhaust gas, and to further increase the amount for combustion air available in the engine, a dump valve is provided for venting at low engine speeds, the engine exhaust direct to atmosphere while isolating it from the gas flowing from the turbo-charger compressor via the auxiliary burner to the turbo charger turbine.</p> |
