https://biblio.ugent.be/publication/818298/file/818329.pdf

Hydrogen-fueled internal combustion engines

Four types of hydrogen detectors are used by researchers, engineers, and manufacturers 
today, and if hydrogen continues to play a role in emerging alternative energy sources, 
there will be exponential growth in the use and need for more advanced and more robust 
devices in the future. The types of sensors reviewed in this chapter are (1) room-temperature hydrogen leak sensors; (2) thermometers, particularly useful at low temperature; 
(3) liquid hydrogen volume and mass gauges; and (4) para/ortho hydrogen ratiometers.

A temperature wall function formulation for variable-density turbulent flows with application to engine convective heat transfer modeling

An experimental study has been carried out to provide qualitative and quantitative insight into gas to wall heat transfer in a gasoline fueled Homogeneous Charge Compression Ignition (HCCI) engine. Fast response thermocouples are embedded in the piston top and cylinder head surface to measure instantaneous wall temperature and heat flux. Heat flux measurements obtained at multiple locations show small spatial variations, thus confirming relative uniformity of incylinder conditions in a HCCI engine operating with premixed charge. Consequently, the spatially-averaged heat flux represents well the global heat transfer from the gas to the combustion chamber walls in the premixed HCCI engine, as confirmed through the gross heat release analysis. Heat flux measurements were used for assessing several existing heat transfer correlations. One of the most popular models, the Woschni expression, was shown to be inadequate for the HCCI engine. The problem is traced back to the flame propagation term which is not appropriate for the HCCI combustion. Subsequently, a modified model is proposed which significantly improves the prediction of heat transfer in a gasoline HCCI engine and shows very good agreement over a range of conditions.

/pdf/new-heat-transfer-correlation-for-an-hcci-engine-derived-tsfkkbztm3.pdf

New Heat Transfer Correlation for an HCCI Engine Derived from Measurements of Instantaneous Surface Heat Flux

Internal-combustion engine heat transfer

Combustion characteristics of a charcoal slurry in a direct injection diesel engine and the impact on the injection system performance.

/pdf/the-determination-of-thermal-properties-of-engine-combustion-1b71uoier6.pdf

Kazuie Nishiwaki

Papers

Internal-combustion engine heat transfer

Combustion characteristics of a charcoal slurry in a direct injection diesel engine and the impact on the injection system performance.

The Determination of Thermal Properties of Engine Combustion Chamber Deposits

Relation between Inlet Valve Closing Angle and Volumetric Efficiency of a Four-Stroke Engine

Numerical Analysis of the Location of Knock Initiation in S. I. Engines