In spite of the fact that flexibility crankshaft diesel engines exhibits notable nonlinearities, analytical modeling such nonlinearities is not yet realized. The present study thus analytically models effect eccentricity on flexible and piston secondary motion. modeled as summation hydrodynamic dynamic mass crankshaft. also absolute value vibrational displacement center paper proves sensitive t...

This study investigates dynamic & static behaviour of automotive engine crankshaft with the specific conditions. This work investigates the coupled modes, including, couple torsional flexural vibration and coupled longitudinal flexural vibration for non rotating engine crankshaft. The finite element models of this generally used are in two categories beam elements and solid elements and in this...

This paper introduces Crankshaft, a MAC protocol specifically targeted at dense wireless sensor networks. Crankshaft employs node synchronisation and offset wake-up schedules to combat the main cause of inefficiency in dense networks: overhearing by neighbouring nodes. Further energy savings are gained by using efficient channel polling and contention resolution techniques. Simulations show tha...

In this article, the failure of a heat exchanger during its operation in the marine environment has been analyzed. This heat exchanger was used for cooling the oil in a marine diesel engine. Based on the existing failure history, damages in engine components were observed after 89 hours of engine working due to the leakage of the sea water to the oil. For the objective of the failure analysis, ...

The deflection of the crankshaft which transfers the power of motor to the pump of the compressor directly affects the vibration, noise and wear problems in the rotary compressor, therefore, with the requirement of higher reliability, it is important to obtain it exactly in compressor design. Various forces that the crankshaft suffers are calculated by theoretical analysis in the operation proc...

The importance of control systems and diagnostics in vehicles are increasing and has resulted in several newmethods to calculate better control signals. The performance can be increased by calculating these signals close to optimum, but that also require more and precise information regarding the system. One of the wanted control signals are the crankshaft torque and the thesis presents two dif...

The performance of JavaScript virtual machines (VM) improved by several orders of magnitude in the last years, giving raise to ever more complex applications. Consequently there is a high demand for further compiler optimizations and therefore short VM development cycles. V8 the JavaScript engine of the Chrome web browser has a baseline compiler optimized for low compiler latency and an optimiz...

The acceleration of the tip seal in the rotor of a Wankel rotary compressor is a function of the radii of the fixed and moving pitch circles, the number of lobes, the trochoid ratio, and the speed and acceleration of.the crankshaft. The equations for the tip seal acceleration are well-known and have been used, in conjunction with the compression forces, to determine the spring forces that are n...

This paper presents a new design method of balance weights with phase angles for scroll compressors. Based on force and moment balances on crankshaft and compressor frame, mathematical formulation of shaft bearing loads, unbalanced force and moment acting on the frame has been made in terms of balance weight design parameters such as masses and phase angles of the upper and lower balance weight...

OBJECTIVE To study young patients after scoliosis surgery in order to determine risk and prevention factors for developing a crankshaft phenomenon (CP). MATERIAL AND METHODS Retrospective study of a cohort of 26 skeletally immature patients. Six were excluded due to progression of various conditions. Crankshaft was defined as an increase in the Cobb angle >10°, or an increase in the Mehta ang...