The max motor torque is 169 Nm which is far less than Gen2 400 Nm, then it is low torque high rpm design and uses reduction gear. Ken@Japan
So it sounds like an interesting mix of the 2G and 3G PSDs. No great surprise, though it will be interesting to see what the size of the PSD is compared to the 2G and 3G PSDs. I think Toyota needs to drop off a "off road only test vehicle" in my driveway so I can disassemble it ;-)
What's amazing about Prius c is the weight. From the Aqua spec, it is going to be lighter than the comparable non-hybrids. Only iQ will weight less. Prius c weight may tie with Fiat 500.
Well almost all new Toyota hybrids have less electric motor torque than the Gen 2. That 295lb-ft was a lot but if they're able to make up for it with the reduction gear, then Toyota can use a smaller, lighter, less powerful motor to save weight and cost. So the Aqua does use the reduction gear for torque multiplication, right? Just how the 3rd Gen does it even though it's down 150lb-ft of torque?
Yes the important measure of MG2 is torque at the wheels after gearing and kw. They did drop down the power of mg2 and the battery though so less cost and weight, but less assistance too.
So I'd be interested in the final numbers. They've kept the costs down by using an older engine but they've managed to update it with cooled EGR and the beltless configuration (Did they mention the EHRS as well?). All of that in a light car, I'm still hoping for 60mpg city. Maybe it'll have the same numbers as the Gen 2 pre-2008 EPA lol.. 60/51, 55mpg combined.
The EHRS is available as factory option on JP Aqua same as Prius α. Does NA Prius v come with the EHRS as standard? Ken@Japan
Wow, as a factory option?? As a "cold weather package"? Yeah EHRS is standard on 3rd Gen and Prius v.
I found an article about the Aqua (Prius c) hybrid unit information. It says... The ICE is 51mm shorter and 16.5kg lighter than 3G. The trans-axle is 21mm shorter and 8.0kg lighter than 3G. The battery pack is 140mm shorter and 11.0kg lighter than 3G. Also, it is confirmed that Aqua (Prius c) has the reduction gear set. Ken@Japan
Ken, thanks for the information. Since I can only read a few words of Japanese, I'm curious if other information is included. What are the changes in the ICE from the 1.5L in the Gen II? Are there any 0-100kph estimates for the aqua? Thanks
Please refer to following comparison; Prius 2G Aqua(Prius c) Prius 3G 1 ICE model 1NZ-FXE 1NZ-FXE 2ZR-FXE 2 ICE cc 1496 1496 1797 3 ICE kW 56 54 73 4 water pump belt electric electric 5 cooled EGR no yes yes 6 MG2 kW 50 45 60 7 MG2 Nm 400 169 207 8 reduction gear no yes yes 9 battery modules 28 20 28 10 battery kW 25 19 27 11 system kW 81 73 100 We don't know the 0-100km/h number yet. Ken@Japan
It is clear Prius c HSD is carefully tuned/spec for a smaller Prius with advancements made with Gen III Prius.
I think suggesting "carefully" is excessive. It's pretty obvious what they would do given a smaller size, a priority of urban efficiency and reduced cost.
Trade-offs all seem to be in the interest of lower costs and smaller size, and lets face it, this is a good design goal. If it was efficiency and performance different engineering choices might have been made. It would be nice if toyota offered an option of the 1.8L and a higher power battery/suspension tuning, but I'm not sure the gen III engine would fit.
It doesn't look like it will fit. Just look at the oil dipstick. It doesn't look like there is much room left.
FYI, re: engine block heater hole We know Aqua (Prius c) uses the same 1NZ-FXE engine as Gen2. However, I found an interesting point at the Tokyo Motor Show. The Aqua (Prius c) engine block heater hole is now on the intake side than the exhaust side on Gen2. So, the 1NZ-FXE on the Aqua (Prius c) uses newly developed engine block. Ken@Japan
