Research on the Fuel Saving Effect of Idle Parking car Based on NEDC System Analysis

Abstract

Abstract. Objective: To study the technology of auxiliary motor starting and stopping of the direct injection gasoline engine, and analyze the effect of the idle start stop system and oil saving energy. Method: the fuel saving effect analysis of the fuel saving effect of the system is analyzed by the multiple model. Process: we in the downtown and suburban stop system to open and close the NEDC fuel consumption record results, typical conditions stop system NEDC drive cycle fuel saving effect curve analysis, and instantaneous fuel consumption curve comprehensive comparative analysis. Conclusion: through data analysis, we can know that the average vehicle parking time is more than 9S, the system can reduce the fuel consumption of vehicles; for these two models, starting fuel consumption is high.

Effect of idle-start-go on the economy and emissions of gasoline vehicles

“…The reduction in fuel consumption after employing ISG system increases with the extension of idling time, which can be fitted well by a quadratic curve. According to the fitting curve, it can be inferred that ISG system can improve the fuel economy of test vehicles when the idling time is more than 5.9 s, which is similar to the results of Lu et al 12…”

“…(1.12 6 0.17 improve the fuel economy of test vehicles when the idling time is more than 5.9 s, which is similar to the results of Lu et al 12 Emission characteristics. Considering the different generation mechanisms of THC, CO, NO x , and particulate matter, the effect of ISG system on emissions cannot be evaluated accurately only by idling time.…”

“…The sub-23 nm particle emission under ''w ISG'' condition increased by 37.4% from 1.82 3 10 13 to 2.50 3 10 13 #/cm 3 compared with ''w/o'' ISG condition for GDI-1. And for GDI-2, the number increased by 90.7% from 2.36 3 10 12 to 4.50310 12 #/ cm 3 . This part of emission is not considered in the above results (i.e.…”

“…10 The idle start-go (ISG) system, well-known as an effective measurement to reduce idling time, has been employed by numerous manufacturers to improve fuel economy, which can shut down the engine as the vehicle is stopped and keep the engine off until the brake pedal is released. 11 Actually, the impacts of this system on fuel economy and emissions can be regarded as a trade-off between the idling and starting conditions, as reported that ISG system can reduce fuel consumption when the average vehicle parking time is longer than 9 s. 12 Along with the rapid development of electrification, vehicles equipped with ISG systems will occupy more market share in the coming years, and it is predicted that approximately 63% of vehicles will implement ISG systems in the North American market by 2025. 13 Many studies focused on the fuel economy benefit of ISG systems.…”