AVL BOOST is a sophisticated 1D thermodynamic simulation tool designed for the comprehensive analysis of internal combustion engines (ICE), tailpipe emissions, and acoustics. As of April 2026, the software continues to be a cornerstone in both automotive research and educational settings through programs like the AVL University Partnership .
AVL BOOST solves the conservation equations for mass, momentum, and energy within a one-dimensional framework. This means that while gas properties change along the length of a pipe, they are assumed to be uniform across its cross-section. The Governing Equations
The framework is not a "black box" but a powerful extension mechanism. While this tutorial covers the User Performance Development workflow for cylinder modeling, the same principles apply to valves, pipes, and boosters. avl boost tutorial upd
Select a combustion framework. For predictive modeling, use the Vibe Function or Two-Zone Vibe Model . Input the start of combustion (SOC) and the combustion duration in crank angle degrees.
! Assign results ! BURN = dMF/dcrank (mass fraction burned derivative) ! HR = Heat Release Rate [J/deg] = BURN * MF * QLHV AVL BOOST is a sophisticated 1D thermodynamic simulation
When AVL releases a new version, they often:
To start, open the . A typical workflow involves creating a new case and selecting the engine type. Step 1: Create New Case Go to File -> New . Choose your project location and name. This means that while gas properties change along
The AVL BOOST interface relies on a drag-and-drop Canvas where you connect various engine components. The primary goal is to create a closed-loop system where air enters through an intake system, reacts in a cylinder, and exits through the exhaust. Key components you will use include:
Evaluate the intake pipe tuning by reviewing air delivery metrics across different RPM points.
: This tool is the successor to the "BURN" module in AVL BOOST. It automatically derives Rate of Heat Release (ROHR)
SUBROUTINE USER_CYLINDER(CA, X, DX, V, DV, P, DENS, T, & MF, AF, ETAC, ETAS, QLHV, & HR, BURN, PTHB, USER_PAR, & N_UP, I_ERR, TEXT) IMPLICIT NONE REAL*8 CA, X, DX, V, DV, P, DENS, T, MF, AF, ETAC, ETAS REAL*8 QLHV, HR, BURN, PTHB, USER_PAR(*) INTEGER N_UP, I_ERR CHARACTER*80 TEXT