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2. Leak-down tester - Wikipedia

   en.wikipedia.org/wiki/Leak-down_tester

   Compression tests should normally be done with all spark plugs removed to maximize cranking speed. Cranking compression is a dynamic test of the actual low-speed pumping action, where peak cylinder pressure is measured and stored. A compression tester. Leak-down testing is a static test. Leak-down tests cylinder leakage paths.

3. Engine test stand - Wikipedia

   en.wikipedia.org/wiki/Engine_test_stand

   An engine test stand is a facility used to develop, characterize and test engines. The facility, often offered as a product to automotive OEMs , allows engine operation in different operating regimes and offers measurement of several physical variables associated with the engine operation.

4. Compression ratio - Wikipedia

   en.wikipedia.org/wiki/Compression_ratio

   For example, if the static compression ratio is 10:1, and the dynamic compression ratio is 7.5:1, a useful value for cylinder pressure would be 7.5 1.3 × atmospheric pressure, or 13.7 bar (relative to atmospheric pressure). The two corrections for dynamic compression ratio affect cylinder pressure in opposite directions, but not in equal strength.

5. Head gasket - Wikipedia

   en.wikipedia.org/wiki/Head_gasket

   In an internal combustion engine, a head gasket provides the seal between the engine block and cylinder head(s). Its purpose is to seal the combustion gases within the cylinders and to avoid coolant or engine oil leaking into the cylinders. [1] Leaks in the head gasket can cause poor engine running and/or overheating.

6. Single-cylinder engine - Wikipedia

   en.wikipedia.org/wiki/Single-cylinder_engine

   DKW RT 250 (1952–1953) motorcycle engine. A single-cylinder engine, sometimes called a thumper, is a piston engine with one cylinder.This engine is often used for motorcycles, motor scooters, motorized bicycles, go-karts, all-terrain vehicles, radio-controlled vehicles, power tools and garden machinery (such as chainsaws, lawn mowers, cultivators, and string trimmers).

7. CVCC - Wikipedia

   en.wikipedia.org/wiki/CVCC

   After Date suggested the use of a prechamber, which some diesel engines utilized, the first engine to be installed with the CVCC approach for testing was a single-cylinder, 300 cc version of Honda's EA engine installed in a modified Honda N600 hatchback in January 1970. [1]