Homogeneous Charge Compression Ignition - Prototypes

Prototypes

As of 2012, there were no HCCI engines being produced in commercial scale. However, several car manufacturers have fully functioning HCCI prototypes.

• In 2007-2009, General Motors has demonstrated HCCI with a modified 2.2 L Family II engine installed in Opel Vectra and Saturn Aura, . The engine operates in HCCI mode at speeds below 60 miles per hour (97 km/h) or when cruising, switching to conventional spark-ignition when the throttle is opened, and produces fuel economy of 43 miles per imperial gallon (6.6 L/100 km; 36 mpg) and carbon dioxide emissions of about 150 grams per kilometre, improving on 37 miles per imperial gallon (7.6 L/100 km; 31 mpg) and 180 g/km of the conventional 2.2 L direct injection version. GM is also researching smaller Family 0 engines for HCCI applications. GM has used KIVA in the development of direct-injection, stratified charge gasoline engines as well as the fast burn, homogeneous-charge gasoline engine.
• Mercedes-Benz has developed a prototype engine called DiesOtto, with controlled auto ignition. It was displayed in its F 700 concept car at the 2007 Frankfurt Auto Show.
• Volkswagen are developing two types of engine for HCCI operation. The first, called Combined Combustion System or CCS, is based on the VW Group 2.0-litre diesel engine but uses homogeneous intake charge rather than traditional diesel injection. It requires the use of synthetic fuel to achieve maximum benefit. The second is called Gasoline Compression Ignition or GCI; it uses HCCI when cruising and spark ignition when accelerating. Both engines have been demonstrated in Touran prototypes, and the company expects them to be ready for production in about 2015.
• In October 2005, the Wall Street Journal reported that Honda was developing an HCCI engine as part of an effort to produce a next generation hybrid car.
• Oxy-Gen Combustion, a UK-based Clean Technology company, has produced a full-load HCCI concept engine with the aid of Michelin and Shell