Standard

SAE 2009-01-1457

Apr 2009 Current

Existing or new amendments and versions must be purchased separately.

Language English

Services Online + Pdf CHF 0.00 Online CHF 0.00

There are no extended editions available for this standard

There are no available corrigendum or amendments for this standard. Any future corrigendum and amendments will be added automatically for subscribers.

Abstract

By variation of the compression ratio the fuel consumption of high boosted gasoline engines can be reduced, due to operating with higher compression ratios at low load compared to an engine with fixed compression ratio. The two-stage VCR-system enables a high share of fuel saving potential relative to full variable systems. Considering a low cost manufacturability and a beneficial integratability into common engine architectures the length-adjustable conrod using an eccentric piston pin in the small eye has proved as the best concept. The adjustment is performed by a combination of gas and mass forces. This article describes the design of such a two-stage VCR-system as well as the functional testing under motored and fired engine operating conditions.

Products specifications

Standard from SAE International
Published: April 20 2009
Document type: IS
Pages
ISBN:

Publisher: SAE International
Distributor: SAE International

Create subscription

Extended editions Extended editions (0)

Version history Related Corrigenda and Amendments (0)

Abstract

Products specifications