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Engine Design

4 days MOT/COMOT-E
  • Engineers and technical staff involved in the field of engines who wish to be in a position to make technical choices and components dimensioning.
  • The training is aimed at providing participants with an overview on the design and dimensioning criteria of reciprocating piston engines, particularly those for automotive applications.
Learning Objectives
  • To understand the process to choose the architectures of a new engine at pre-project stage: cubic inch displacement, bore-stroke ratio, cylinder head and block structures, timing drive.
  • To be able to select and use the adequate criteria to develop the cam laws.
  • To be able to use the main rules applied to block and cylinder head design.
  • To be able to choose and explain materials selection for the main engine components.
Ways and means
  • Many applicative examples of the real life, dimensioning exercises managed by learners, focused cases study.

Architecture options 0.5 day
  • Specifications of a new engine.
  • Determining the main dimensions: bore, stroke, cylinder spacing, depending on the specifications: MEP characteristics and piston mean velocity on engines of the same range.
  • Global design process of mobile coupling system, crankcase-cylinders, cylinder head, timing.
Mobile parts dimensioning 1.5 days
  • Kinematics and dynamics of the mobile parts.
  • Choosing the conrod spacing. Conrod swept volume. Calculation of stresses in the links.
  • Functions to be performed by the piston and the rings. Dimensioning of the pin and the bosses.
  • Bushing dimensioning.
  • Conrod: ring and bushing shrink fitting, resistance to fatigue and buckling, connecting rod screws dimensioning.
  • Crankshaft: shape depending on the cylinders number, material, counterweight, stresses, crank pin pre-dimensioning method, dowels, crank web, lubrication system.
  • Balancing and dimensioning of the balancing shafts for an inline-four engine.
Crankcase-cylinders and lower crankcase 0.5 day
  • Crankcase-cylinders functions and stresses.
  • Choosing the engine bottom material and architecture.
  • Building the conrod chamber. Determining the crankcase height. Choosing water circulation.
  • Oil circuits, oil returns, blow-by chimneys.
  • Timing face, coupling face, side faces.
Cylinder head 0.75 day
  • Cylinder head functions. General choices of cylinder head architecture. Material. Definition of bore spacing: setting the clamps, the injector, the valves, the timing control.
  • Intake and exhaust pipes. Water core, oil core. Lubrication system. Processing constraints.
  • Calculation of cylinder head pillar pre-dimensioning.
  • Failure modes. Validation.
Timing 0.75 day
  • Valve control and timing drive technologies.
  • Valves, valve guide and seats, wedges, springs.
  • Timing diagram, path section. Determining the lift law. Margin to valve hunting. Dimensioning criteria: stresses, Hertz pressure, wear, noise. Cam drive torque.
  • Calculation exercise of a cam on tappet symmetric lift law. Calculation codes, modeling.
  • Variable timing system.
2016 course calendar
Language Dates Location Tuition Register
Jun 14 - 17 Rueil €2,090 Online By email