In the development process of a certain CHINA VI proprietary brand car model, there exists problem intermittent “dada” sound in cockpit during idling. After investigation, it’s determined that air pulse noise generated when canister purge solenoid valve is working, it transmitted to panels through pipeline, and then cockpit, which would cause sound. By adding expansion chamber desorption pipe d...

One of the most important requirements of repairing and maintaining of pipelines is the ability to monitor and evaluate the pipe’s interior. In this paper, a novel apparatus to traverse pipes is introduced. The mechanism employs three independent rubber track units which are circumferentially spaced out 120 degree apart symmetrically. The apparatus employs an active mode to adapt to a wide rang...

In order to detect distributed ground surface deformation, an elastic helical structure Time Domain Reflectometry (TDR) sensing cable is shown in this paper. This special sensing cable consists of three parts: a silicone rubber rope in the center; a couple of parallel wires coiling around the rope; a silicone rubber pipe covering the sensing cable. By analyzing the relationship between the impe...

Cognitive enrichment is gaining popularity as a tool to enhance captive animal well-being, but research on captive cetaceans is lacking. Dolphin cognition has been studied intensively since the 1950s, and several hundred bottlenose dolphins are housed in major zoos and aquaria worldwide, but most dolphin enrichment consists of simple floating objects. The aim of this study was to investigate wh...

It has recently been stated (Sheldon, 1949) that none of the methods described for conducting ' balance ' experiments on incontinent children have as yet proved satisfactory. We are prompted, therefore, to describe the method which we have employed for some time in this hospitaL A special type of bed is used, designed on the principle of the metabolic cage for animal experiments. It consists of...

The Moulton Hydragas suspension system improves small car ride quality by interconnecting the front and rear wheel on each side of the vehicle via a hydraulic fluid pipe between the front and rear dampers. A Hydragas system from a Rover Group MGF sports car was statically and dynamically tested to generate stiffness and damping coefficient matrices. The goal was to develop the simplest possible...