https://www.dsm.com/content/dam/dsm/stan...TI_Dec_2010.pdf
Don't let the CAFE like title put you off, this paper looks at the power losses associated with simply running the cam chain on a Ford Duratorque 4 cylinder diesel, including change of direction friction, and the rubbing on the chain tensioners and guides.
2,000 RPM, the heat generation of the timing chain is of the order of 700W...at 4,000 RPM 1,400W...imagine how quickly a chain would heat up sitting on a 1KW glowing element radiator.
Mentions the heating effect (note no raging fires in the timing chain case), and what carries the heat away.
Plus the frictional and temperature stability differences between some common guide materials.
Conclusion...2.1g CO2/km is available by changing to the better material, for a cost of 1 Euro per vehicle on average....saving the car Company about 200Euro in carbon fines/taxes on a new vehicle sale.
Don't let the CAFE like title put you off, this paper looks at the power losses associated with simply running the cam chain on a Ford Duratorque 4 cylinder diesel, including change of direction friction, and the rubbing on the chain tensioners and guides.
2,000 RPM, the heat generation of the timing chain is of the order of 700W...at 4,000 RPM 1,400W...imagine how quickly a chain would heat up sitting on a 1KW glowing element radiator.
Mentions the heating effect (note no raging fires in the timing chain case), and what carries the heat away.
Plus the frictional and temperature stability differences between some common guide materials.
Conclusion...2.1g CO2/km is available by changing to the better material, for a cost of 1 Euro per vehicle on average....saving the car Company about 200Euro in carbon fines/taxes on a new vehicle sale.