Description  Claims  Drawing  Cited references 

US8616177B2   [0012] 
US20140026859A1   [0012] 
US8991358B2   [0012] 
US9151241B2   [0012] 
EP2682588A1   [0016] 
US2014251278A1   [0020] 
US2013081592A1   [0020]  [0021] 
US2011057049A1   [0020] 
WO2017009799A1   [0025]  [0026]  [0027]  [0027] 
WO2013112169A1   [0028] 

International Journal of Engine Research   [0017] 
scientific journal SAE international   [0018]