Method for detecting fuel consumption of vehicle in transient road-test standard state

Abstract

The invention discloses a method for detecting the fuel consumption of a vehicle in a transient road-test standard state. The method is characterized in that both a transient road-test load of the vehicle and a load of an engine are corrected so that the fuel consumption of the transient road-test load of the vehicle and the fuel consumption of the load of the engine can be detected and evaluated in a standard environmental state, the fuel consumption Delta Q within various time intervals Delta t are measured in a road test, idle-speed, acceleration, constant-speed and deceleration conditions are respectively corrected by the aid of a road-test load coefficient and an engine power correction coefficient to obtain the fuel consumption Delta Qb in various standard environmental states of the conditions, and the Delta Qb of a total time interval under each condition in a full detection procedure is accumulated to obtain the detected fuel consumption Qb0 of the vehicle in the transient road-test standard state. The method has the advantages of high accuracy, speediness, simplicity and the like.

Description

technical field [0001] The invention relates to the technical field of vehicle performance road test detection methods, in particular to a vehicle transient road test standard fuel consumption detection method. After the fuel consumption is detected in working conditions, constant speed working conditions and deceleration working conditions, the fuel consumption measured in the road test environment is corrected to the fuel consumption in the standard environment, so that the fuel consumption of different models Quantities can be compared and evaluated under uniform reference state conditions. Background technique [0002] There are two methods for detecting fuel consumption in existing vehicle road tests. The first one is JT711-2008 "Limits and Measurement Methods of Fuel Consumption of Commercial Passenger Vehicles" and JT719-2008 "Limits and Measurement Methods of Fuel Consumption of Commercial Trucks", It belongs to constant speed road test to detect fuel consumption; t...

AI Technical Summary

Problems solved by technology

The invention patent application "Vehicle Constant Speed ​​Road Test Standard State Fuel Consumption Correction Method" only solves the problem of fuel consumption correction under constant speed conditions. Fuel consumption under environmental conditions, the unified detection and evaluation of fuel consumption, there are many defects and gaps in the existing technology