Details of the bore, stroke, mean pressure and operating temperatures are unknown. The P40 engine is most likely a production series version of the V4X engine with a bore of 50mm (1.97 in) and stroke of 46mm (1.81 in) (Carlqvist et ai 1975).

A cross-section of the P150 engine is shown in Fig. 15.10. (Carlqvist el al. 1977). This engine is basically twin modules of the P75 engine mounted on a common crankcase. Fie. 15.11 (Carlqvist et al. 1977) shows a P75, V4 engine module with auxiliaries. Fig. 15.12 (Carlqvist et ai 1975) shows the installation envelope of a PI50, V8 engine having an

Bus Philips Stirling Engine

Fuel injector

Annular preheoter

Combustion chamber l-.nvolute heater

Regenerator Gas cooler Piston

Piston rod seal system


Connecting rod



Fid. 15.10. Cross-section of United Stirling PI50 double-acting Stirling engine (after

Rosenqvist cf al. 1977).

overall length of 1200 mm (47.24 in), width 680 mm (26.78 in) and height 980 mm (38.6 in). Fig. 15.13 (Rosenqvist ei al. 1977) shows the calculated performance characteristics of a PI50 engine. In 1977 four P75 V4 engines were said to be in laboratory testing, with field testing scheduled for 1979 in mine vehicles and city buses (Hallare and Rosenqvist 1977).

Solar Stirling Engine Basics Explained

Solar Stirling Engine Basics Explained

The solar Stirling engine is progressively becoming a viable alternative to solar panels for its higher efficiency. Stirling engines might be the best way to harvest the power provided by the sun. This is an easy-to-understand explanation of how Stirling engines work, the different types, and why they are more efficient than steam engines.

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