- When you are driving under 50 MPH in traffic they do not burn fuel as economically and therefore expel more emissions.
- Their economy gets worse (by up to twice as much consumed – or more) the slower below 50 MPH you drive, improves up to about 50 MPH and then gets worse again.
- When accelerating fast or at high top speeds they get the most efficient energy from the fuel but this is not more economical because they then waste it due to the additional losses incurred accelerating or driving at high speed against exponential increases in wind resistance – because to generate lower power (to drive slower) all standard engines have been designed to burn fuel much less efficiently – so too little throttle is not more economical and neither is too much.
- They could burn around 50% less fuel (and expel far fewer emissions) if the compression pressure at low power outputs could be made higher.
- The only way the industry has explored to do this seems to be with mechanically variable compression pressure changes that they believe are too complicated and/or expensive to implement (except for Nissan).
- If engines were fitted with higher compression ratio pistons they would be potentially faster, smoother, more responsive, more efficient, consume less fuel and expel less emissions while running perfectly reliably when using up to 50 or 60 % of their peak power (sufficient for most legal speeds, normal legal driving conditions and performance expectations).
- Unfortunately unless the resulting compression pressure could then be lowered when over 50 to 60% throttle they would detonate and damage themselves (hence unavailable).
- But the industry seems to have ignored the fact that it is not only by mechanically lowering the C/R again that you can prevent the resulting detonation.
The Hartech ECO-POWER-ENGINE® solution was developed in-house and provides a cost-effective proven way to achieve realistic economy gains.
There are a range of non-technical and technical documents available, including road test reports, scientific formulas & graphs, and even test cars available to anyone who is interested in helping Hartech take this to market.
Want to find out more, contribute to the discussion or become involved in the development? There are numerous reports available as a first step to convince you of their credibility.