88results about How to "Reduce purification efficiency" patented technology

In hybrid vehicle, when the shift position SP is set to the S position at which a driver is allowed to select any one of the shift positions SP1 to SP6, and it is determined that warm-up of a purifying device has not been completed, the target air-fuel ratio AF* is set based on the S position / low coolant temperature-time target air-fuel ratio setting map. The air-fuel ratio AF* set based on the S position / low coolant temperature-time target air-fuel ratio setting map tends to be richer than the target air-fuel ratio AF* set based on any one of the normal-time target air-fuel ratio setting map and the D position / low coolant temperature-time target air-fuel ratio setting map that are used when the D position is selected.

The invention discloses a method and device for purifying particulate matters and volatile organic compounds in catering oil smoke by utilizing a synergistic effect of low temperature plasma and catalysts. The method comprises the following steps: enabling the oil smoke to sequentially pass through a low temperature plasma reaction area and a catalytic reaction area, wherein the volatile organic compounds contained in the oil smoke are partially oxidized in the low temperature plasma reaction area and are further oxidized in the catalytic reaction area. On the front section of the low temperature plasma reaction area, the particulate matters contained in the oil smoke are separated, removed or charged by alternately arranged positive and negative polarity high-voltage discharge; on a transition section of the low temperature plasma reaction area, particles with positive charges and negative charges are close and are subjected to coagulation growth; on a rear section of the low temperature plasma reaction area, the particles are continuously subjected to the coagulation growth and are captured and separated. According to the method, the function of efficiently purifying the volatile organic compounds is increased; the efficiency of removing the particulate matters contained in the oil smoke is relatively high; the normal temperature operation can be realized, the fouling resistance is high, and the method is particularly suitable for being used for performing oil smoke treatment in public places such as various dining halls, public houses and hotels.