The Weather is HOT and the MPGs are UP! - Toyota Yaris Forums

bronsin · 07-28-2011, 09:24 PM

Right. How hot will a 400 watt element located in the cylinder head (where it cant heat the coolant or the oil which could thus spread heat to all parts of the engine) make the engine?

Ideally you would like the engine to be at operating temperature just before starting it.

Is there a way of doing that?

Here are the features of the Prius:

More efficient use of the internal combustion engine (ICE), reducing gasoline consumption. The Toyota 1NZ-FXE engine uses the more efficient Atkinson cycle instead of the more common Otto cycle;
Two electric motor/generators, providing 50 kW (67 hp) @ 1,200 to 1,540 rpm and 400 N·m (295 ft·lbf) torque from 0 to 1,200 rpm, which significantly contribute to performance & economy;
50 kW IGBT inverter controlled by a 32 bit microprocessor, which efficiently converts power between the batteries and the motor/generators.
Lower Drag coefficient of drag at 0.26 (0.29 for 2000 model), reducing air resistance especially at higher speeds;
Lower rolling-resistance tires on the 2000 model, reducing road friction;
Regenerative braking, a process for recovering kinetic energy when braking or traveling down a slope and storing it as electrical energy in the traction battery for later use while reducing wear and tear on the brake pads;
Sealed 168 cell nickel metal hydride (NiMH) rechargeable battery providing 201.6 volts;
Continuously variable transmission — the Prius does not use a typical CVT; Toyota calls it the Power Split Device. The electric motors and gas engine are connected to a planetary gear set which is always engaged, and there is no shifting.
Flexible resin gas tank, reducing the amount of hydrocarbon emissions in the form of escaped gasoline vapor;

Vacuum flask coolant storage system that stores hot engine coolant, then reuses it to reduce warm-up time.

Weight reduction — for example the hatch and hood are made of aluminium instead of steel.

Perhaps we can find a way to use this feature for our Yaris is.

07-28-2011, 09:24 PM	#18
bronsin Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008 Location: nj Posts: 4,784	Right. How hot will a 400 watt element located in the cylinder head (where it cant heat the coolant or the oil which could thus spread heat to all parts of the engine) make the engine? Ideally you would like the engine to be at operating temperature just before starting it. Is there a way of doing that? Here are the features of the Prius: More efficient use of the internal combustion engine (ICE), reducing gasoline consumption. The Toyota 1NZ-FXE engine uses the more efficient Atkinson cycle instead of the more common Otto cycle; Two electric motor/generators, providing 50 kW (67 hp) @ 1,200 to 1,540 rpm and 400 N·m (295 ft·lbf) torque from 0 to 1,200 rpm, which significantly contribute to performance & economy; 50 kW IGBT inverter controlled by a 32 bit microprocessor, which efficiently converts power between the batteries and the motor/generators. Lower Drag coefficient of drag at 0.26 (0.29 for 2000 model), reducing air resistance especially at higher speeds; Lower rolling-resistance tires on the 2000 model, reducing road friction; Regenerative braking, a process for recovering kinetic energy when braking or traveling down a slope and storing it as electrical energy in the traction battery for later use while reducing wear and tear on the brake pads; Sealed 168 cell nickel metal hydride (NiMH) rechargeable battery providing 201.6 volts; Continuously variable transmission — the Prius does not use a typical CVT; Toyota calls it the Power Split Device. The electric motors and gas engine are connected to a planetary gear set which is always engaged, and there is no shifting. Flexible resin gas tank, reducing the amount of hydrocarbon emissions in the form of escaped gasoline vapor; Vacuum flask coolant storage system that stores hot engine coolant, then reuses it to reduce warm-up time. Weight reduction — for example the hatch and hood are made of aluminium instead of steel. Perhaps we can find a way to use this feature for our Yaris is.