上海别克轿车装配了带加热器的二氧化锆氧传感器，用以检测混合气空燃比。
The zirconium dioxide oxygen sensor with heater is equipped on shanghai BUICK to check the air-fuel ratio of the mixture.
研究试验结果表明，分层扫气可减少换气过程的燃料损失，使燃油消耗率大幅度下降； 使混合气空燃比的范围加大。
The result shows that stratified scavenging reduces fuel loss during air exchange greatly lowing the fuel consumption rate and enlarging the air-fuel ratio range.
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