在用M1类型汽油车尾气碳氢化合物含量分析数据

在用M1类型汽油车燃料采用火花塞放电点火燃烧，燃烧后产物发生高温离解倾向，特别是某些死区点不着火或在某些工况下断火，使汽油机排放物中含有碳氢化合物(hc)。因此对车辆尾气碳氢化合物含量进行检测，为汽油车尾气排放是否合格提供事实依据，为环保监管和车辆管理提供数据支持。1.数据采集：对在用M1型汽油车尾气碳氢化合物含量进行检测。2.数据检测：稀释气体由排放尾气和环境空气混合而成，利用空气中氧气浓度值，分析仪测得尾气中hc浓度以及稀释气体中hc浓度，可得到进入流量计的排放尾气被空气稀释的比例；测量的结果经温度和压力修正，获得标准体积流，根据尾气的稀释比例，计算出排放尾气的实际流量。根据尾气成份浓度和尾气流量，可测出汽油车尾气中排放污染物含量。该数据和底盘测功机检测发动机实际输出功率相结合，实时分析车辆在负荷工况下排气污染物的排放质量。3.数据处理：hc=∑（浓度×密度×排气流量）/∑车辆当量行驶距离，其中浓度由排气分析仪测量得到，污染物的密度采用标态下的数值，主机系统进行计算和显示时，排气流量校正为标准状态下的流量。碳氢化合物限值为1.6（g/km），超过该数值为不合格。4.数据应用：通过检测数据分析研判，可以判断汽油车尾气碳氢化合物含量是否超标，为环保监管和车辆管理提供数据支持。

For M1 type gasoline vehicles in service, spark plug discharge ignition is adopted for combustion. The combustion products tend to undergo high-temperature dissociation, especially in some dead zones where ignition fails or misfire occurs under certain operating conditions, resulting in the presence of hydrocarbons (HC) in the exhaust emissions of gasoline engines. Therefore, detecting the hydrocarbon content in vehicle exhaust provides factual evidence for verifying whether the exhaust emissions of gasoline vehicles meet the standards, and offers data support for environmental protection supervision and vehicle management.
1. Data Collection: Detect the hydrocarbon content in the exhaust of M1 type gasoline vehicles in service.
2. Data Detection: The dilution gas is a mixture of exhaust emissions and ambient air. Using the oxygen concentration in the air, the analyzer measures the HC concentration in the exhaust and the HC concentration in the dilution gas, so as to obtain the dilution ratio of the exhaust entering the flowmeter diluted by ambient air. The measured results are corrected for temperature and pressure to obtain the standard volumetric flow rate, and the actual flow rate of the exhaust is calculated based on the dilution ratio. The content of emitted pollutants in the gasoline vehicle exhaust can be determined according to the exhaust component concentration and exhaust flow rate. Combined with the actual engine output power detected by the chassis dynamometer, this data enables real-time analysis of the emission quality of exhaust pollutants from vehicles under loaded operating conditions.
3. Data Processing: HC = Σ(concentration × density × exhaust flow rate) / Σ(equivalent driving distance of the vehicle), where the concentration is measured by the exhaust gas analyzer, the density of pollutants adopts the value under standard conditions, and the exhaust flow rate is corrected to the flow rate under standard state when the host system performs calculation and display. The hydrocarbon emission limit is 1.6 g/km; vehicles exceeding this value are deemed unqualified.
4. Data Application: Through data analysis and evaluation of the test results, it is possible to determine whether the hydrocarbon content in the exhaust of gasoline vehicles exceeds the standard, providing data support for environmental protection supervision and vehicle management.

搜集汇总

数据集介绍

特点

该数据集提供了535条M1类型汽油车尾气碳氢化合物含量的详细分析数据，包括车牌号、车辆所有人、分析日期等关键信息，主要用于环保监管和车辆管理，帮助判断尾气排放是否合格。