The design of a Duty-Cycled PLL (DCPLL) capable of burst mode operation is presented. The proposed DCPLL is a moderately-accurate low-power high-frequency synthesizer suitable for use in nodes for Wireless Sensor Networks (WSN) applications. Thanks to a dual loop configuration the PLL’s total frequency error, once in lock, is less than 0.25% from 300 MHz to 1.2 GHz. It employs a fast start-up D...

This paper presents a control oriented model development for waste heat recovery Rankine based control systems in heavy duty trucks. Waste heat recovery systems, such as Rankine cycle, are promising solutions to improve the fuel efficiency of heavy duty engines. Due to the highly transient operating conditions, improving the control strategy of those systems is an important step to their integr...

Abstract Heavy duty is a hard-to-abate segment of transport. freight sector includes road, maritime and the fast-growing aviation segments. Due to need energy dense vector, specifically for sector, liquid alternative fuels are considered as most effective short-to-medium term option allow decarbonisation. The possibility uptake these in heavy-duty road investigated this paper, with goal highlig...

In the summer of 1998, the University of Denver conducted a remote sensing study in the Austin-San Marcos, Texas area. The focus of the study was to measure the ratios of CO, HC, and NO to CO 2 and to get percent opacity readings for heavy-duty diesel trucks with elevated exhaust. We calculated the grams of CO, HC, and NO per kilogram of fuel combusted from the ratios as would be observed by pr...

In networking ECUs in heavy-duty vehicles, it is the J1939 protocol that plays a key role. J1939 networks are based on the CAN bus (high-speed CAN per ISO11898); they are primarily used in powertrain and chassis components. The protocol creates a uniform basis for communication between electronic control units, and it supports the plug-and-play principle. Special J1939 tools and software compon...

The automotive industry is undergoing a revolution where the more traditional mechanical values are replaced by an ever increasing number of Advanced Driver Assistance Systems (ADAS) where advanced algorithms and software development are taking a bigger role. Increased safety, reduced emissions and the possibility of completely new business models are driving the development and most automotive...

China National Heavy Duty Truck (CNHTC) is a famous brand in China. well-known domestic automobile brand, which occupies certain market share the and recognized supported by many consumers. However, Corporation mainly focuses on heavy-duty truck products, development of its VGV light-duty vehicle has not been very good past decade, needs to readjust marketing strategy. This study takes as resea...

This paper studied the engine test cycles including world harmonized steady cycle (WHSC), transient (WHTC) , china heavy-duty (CHSC) and (CHTC) based on a diesel which meet China VI heavy duty vehicle emission standard. The results show that regression analysis of speed, torque power all requirements For this engine, NOx, PM THC pollutants under CHSC are 134.5%, 29.6% 94.4% higher than those WH...