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Crossplane

The crossplane or cross-plane is a crankshaft design for piston engines with a 90° angle (phase in crank rotation) between the crank throws.[1] The crossplane crankshaft is the most popular configuration used in V8 road cars[citation needed].

Aside from the V8 already mentioned, other examples of configurations using such 90° piston phases include straight-2, straight-4, V2, and V4 engines.

Crossplane crankshafts could feasibly be used with a great many other cylinder configurations, but the advantages and disadvantages described below may not apply to any or all of them and must be considered on a case-by-case basis.

3d model of a cross-plane crankshaft demonstrating the 90 degree angle between the crank throws.
  1. ^ See Crankshaft for "crank throw".