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The Internal Combustion Engine

Also Known As ICE Common abbreviation for internal combustion engine.

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The internal combustion engine burns a fuel and air mixture inside a cylinder to drive a piston directly, in contrast to a steam engine's external boiler. Nikolaus Otto built the first working four stroke cycle engine in 1876, offering the first practical alternative to the steam engine as a power source. Alphonse Beau de Rochas had patented the same four stroke cycle theoretically in 1862 but never built an engine on it, a fact that surfaced in 1886 and cost Otto his own German patent, though his engine kept the name Otto cycle as the first one actually built.

Otto is credited as the internal combustion engine's practical inventor for building the first working engine, while Beau de Rochas holds theoretical priority for patenting the four stroke cycle's description fourteen years earlier without ever constructing a device.
Facts
Patent or First-Use Date
1876-01-01 1
Year of Nikolaus Otto's compressed-charge four-cycle engine patent; exact day not stated in source.
Significance
The internal combustion engine succeeded the steam engine as the dominant prime mover for transportation, powering the automobile, the motorcycle, most ships and, until the jet engine, most powered flight. 2
Disputed
Year
1876 2
Cross-Tradition Connections

In Field

Source Encyclopaedia BritannicaEncyclopaedia Britannica editors

Held Differently

Alphonse Beau de Rochas, Engineers

Why this is disputed. Beau de Rochas patented the four stroke cycle theoretically in 1862, fourteen years before Otto built a working engine on it; the German patent office revoked Otto's own patent in 1886 once the earlier pamphlet was found, though Otto's engine remains the first one actually built.

Source Encyclopaedia BritannicaEncyclopaedia Britannica editors

Invented By

Source Encyclopaedia BritannicaEncyclopaedia Britannica editors

Preceded By

Source Encyclopaedia BritannicaEncyclopaedia Britannica editors

Predecessor Of

Source Encyclopaedia BritannicaEncyclopaedia Britannica editors
Sources
1. Internal Combustion Engine (Wikipedia)
Wikipedia contributors, Wikimedia FoundationHistory section
Quote, History section
In 1876, Nicolaus Otto began working with Gottlieb Daimler and Wilhelm Maybach, patented the compressed charge, four-cycle engine.
View the Source
1. Internal Combustion Engine (Wikipedia)
Wikipedia contributors, Wikimedia FoundationLead section
Quote, Lead section
An internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit.
View the Source
2. Encyclopaedia Britannica
Encyclopaedia Britannica editors, Encyclopaedia Britannica, Inc.
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