ESTECH.PSISTOP

Background

• It generally becomes an issue that a vehicle equipped with idling stop mechanism causes discomfort and uneasiness to passenger, because the vibration generated by engine stop and restart event doesn't match with the passenger’s feeling since the event happens automatically regardless of the passenger’s intention. Therefore, suppressing the vibration is one of the major challenges when developing a vehicle with the mechanism.

Feature

• The software predicts unsteady engine rigid body excitation forces which cause the above-mentioned vibration by an engine stop and restart simulation.
• The software is operating on Microsoft Excel easily therefore non-CAE specialist can deal with it, however, it well describes complex engine whole system model shown down below.
• It is highly recommended to make use of the software for design to reduce the excitation forces and creating nonstationary input data to a vehicle model.

Overview

Name	ESTECH.PSISTOP
Function	Calculate engine rigid body excitation forces to power-plant and input torque to crank shaft at engine stop and restart timing.
Applicable engine models	Engine with single cylinder to 12 cylinders, Inline, V shape and Horizontally opposed 4 cycle engines Engine with unequal combustion intervals
Input data	Primary design specifications of engine main moving parts Design specification of starter motor
Output data	① Engine speed ② Cylinder pressure ③ ６DOF rigid body excitation forces ④ Crankshaft time history input torque in Microsoft Excel format
Others	The above ③, ④, are also calculated by measured time history input data of ①, ②

Contact

Please feel free to contact for further information