Dynoed my prius

Recently entered a competitive event that required entrants to dyno their cars. Did three pulls on the dyno. Pull 1 was in normal mode. Hp 102.83 torque 84.98. Second and third pulls were in power mode and some interesting things happened. 2nd pull, 92.55 hp and 136.29 torque. 3rd pull 87.04hp snd 109.26 torque. No time was allowed between pulls to allow the battery to recharge. The dyno graph was the strangest one of all the cars that day. It was the only hybrid in the group.

 

This was on my 2017 gen4 with 98k miles. All pulls were done with the car in maintenance mode as well.

 

Apparently that is the case. A 52 point increase in torque between normal and power mode. Also note on the graph at how linear the power band is and what happens at higher rpm’s when the electric motor kicks in.

 

I wouldnt put too much emphasis on those rpm numbers. It was a marathon session of getting over 20 cars on the dyno in a 5 hour window. They didnt have time to enter data for each and every car like tire size and what not. Two other cvt equpped cars had similar rpm numbers and their hp ratings were reasonable compared to the cars rated output. The gen4 is rated at 122hp, this dyno run shows 102 at the wheels. Dont think taking the time to calibrate the machine to the specifics of the car will drastically change the end results.

 

Surprised none have asked about the competitive event that required dyno testing. Well here ya go.

Good pics of my car and setup at 6:13 and 7:05 into the video. A few other pics and you can see it if you look close.

 

The car worked extremely well. My intent was to drive non stop. 64 gallons of auxiliary fuel tanks were added in the back hatch area. This took quite a bit of time and engineering to do and worked perfectly. Over the course of the last year i did multiple deliveries for a local defense contractor and used those as test drives for the cannonball. At a steady 90mph the car returned 43-44 mpg so used this as my baseline to determine how much fuel i needed. Turns out at a steady 110+ the prius does not return those numbers. The sub 30 mpg forced me to do a single fuel stop in colorado where i added 57 gallons to the auxiliary tanks. There was a 6 hour window where i drove 628 miles. I was leading the pack for a very long time and was on track to do a roughly 33 hour run. Most took the southern route, at the last minute i decided on the northern route as all my mapping devices said it was just over two hours faster. All participants used a group tracking app called joiner that showed everyones location. Ive included screenshots of that app and the blue dot is my location. Unfortunately tragedy struck in colorado near veil canyon. An accident shut down the highway and after a 38 minute stop on the highway a reroute was made on a two lane road for 48 miles to get around the accident. This caused a near 3 hour delay which also caused me to enter the Los Angeles area during rush hour which added further delays. My finish time was a disappointing 36:55. But i became the 10th person in the 50 year history of cannonball to do it solo which is quite an achievement. Got an award at the finish party which was cool. After two days of fun and rest i then undertook another adventure. I drove the coast to coast run, solo, nonstop. San Diego to Jacksonville Florida. Made that run in 30 hours. Spent the night in Jacksonville and drove home the next day. Made it just under 3000 miles from san diego to florida to my home in north Carolina and never made a fuel stop. Car had a quarter tank left too. Over the course of 7 days i drove over 6,500 miles, added photos to show that as well. Overall this event took over a year of planning, a few thousand in money and turned out to be the most fun ive had in a long time.