This presentation highlights the details of the dry sump oil pump design I worked on as the Lubrication Subteam Leader on Cornell Racing Formula SAE.

1. LUBRICATION SYSTEM
DESIGN
Brendan Higgins
Spring 2014

2. LUBRICATION SYSTEM SCHEMATIC

3. 2013 DESIGN
Stock internal high pressure pump
not shown

4. 2014 DESIGN 1ST ITERATION

5. 2014 DESIGN 2ND ITERATION
2014 2.0 2013

6. 2014 DESIGN IMPROVEMENTS
• Utilized half of stock internal pump to save weight and space
• New custom gear teeth and rotary lobe designs to improve durability and flow rate
• Block plates used to divide scavenge stages and ease producibility on CNC
• New cylinders between pan and scavenge stages designed to simplify assembly issues
• Took advantage of pre-existing internal engine oil lines to reduce the number of external lines
• Saves weight
• Reduces assembly time and complexity
• Frees up space in engine bay
• Reduces number of leakage points and AN fittings required
• Provides shorter & easier path for oil travel
• Quick disconnect fittings drastically improves assembly time
• Custom block fitting design used to eliminate relief valve line
• Optimized oil pan design
• Fewer channels – simplifies manufacturing process
• Not as thick as previous years – reduces weight & allows lower engine placement
ign changes carefully considered for weight savings, performance, producibility, & assembly pu

7. 2014 DESIGN 2ND ITERATION

8. 2014 DESIGN 1ST 2ND ITERATION

9. 2014 DESIGN 2ND ITERATION

10. 2014 DESIGN 2ND ITERATION
Gear stage
drives idler
shaft
Rotary lobe scavenge stages collect oil
from pan and turbo and return to oil
Oil flows out
to reservoir
Engine case
Stock
internal
half of
pump
Custom
half of high
pressure
pump
Gerotor not
shown for
clarity
With the exception of
the stock internal half
of pump (and gerotor),
the engine case, and
AN fittings, every
component was
designed in house.
Most parts were
entirely or at least pre
and post-machined in
house on CNC or
standard mills &
lathes. The drive
shafts were pre-
machined out of house
for precision, but heat
treated and grinded in
house. Some of the
Oil flow
direction

11. CONTACT INFORMATION
• Please feel free to contact me by any of the following methods to
discuss this design in further detail:
• Email: bah87@cornell.edu
• Cell: (845) – 283 – 5894