Process for evaluating the environmental impact of components of lubricating oils
US5913253A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1997 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | May 30, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2817
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Process for determining the effect of lubricants and the relative components on exhaust emissions, specifically on the particulate, of an internal combustion engine which comprises: PA1 (a) feeding, under almost constant flow rate conditions, the lubricant, or its components, to a single-orifice injector, through which the lubricant is sprayed into the intake air manifold of an engine; the flow rate of the lubricant is regulated to be from 2 to 8% of the flow rate of the fuel; the viscosity of the lubricant near the single-orifice injector being from 30 to 50 cSt; PA1 (b) combustion of the lubricant and fuel with the consequent formation of exhaust gases; PA1 (c) evaluation of the gases and of the particulate contained in the exhaust gases formed in step (b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.