Toyota Prius/Driving tricks – Wikibooks, open books for an open world

29 Jul 2014 | Author: | Comments Off on Toyota Prius/Driving tricks – Wikibooks, open books for an open world


Toyota Prius

/Driving

Toyota Prius

Efficient Prius driving avoiding inefficient modes, using B or running the internal engine (ICE) or excessive and speed, and maximizing efficient such as using electronic (EV) modes. When route planning allows of these to be achieved, often little or no change in elapsed

Above all, it’s to understand that a casual driver needs to understand of the tricks described below. drive it and enjoy!

Use pulse and driving technique for maximum

Using B Shift Position [ ]

The Prius uses an electronic mode selector, similar to a shift on a conventional car. a conventional vehicle with P R N D 2 1 (park, reverse, neutral, 2nd gear, 1st gear) the Prius has a button, a park button, and a for modes R N D and B (reverse, neutral, and engine-Braking).

In the course of normal the driver NEVER needs to use mode (engine Brake The techniques below are optional. mode is appropriate when long grades (i.e. down a mountain road), if the driver uses the brake to control the vehicle’s speed, the brake pads will and fail.

In a normal vehicle, the handles that condition by to an appropriate speed and shifting to a gear (2nd or 1st). forces the vehicle to spin the faster than needed, energy through vacuum but helping maintain a safe speed without overheating the pads.

In a Prius, the driver that condition by selecting B This tells the Prius to to emulate engine braking in a vehicle. Depending on the vehicle’s and the battery SOC (state of charge), the will do this using braking and/or high-RPM engine braking.

Engine braking is inefficient it uses the engine as an air pump, kinetic energy into Unnecessary regenerative braking is inefficient because of energy losses. (Regenerative braking is when it replaces friction but it’s not as efficient as coasting at a speed.) Because of this, B will not recharge your more efficiently than braking and is not recommended for general Just as you might downshift 2nd gear when going a long, steep hill to brake damage, you can downshift B mode on a Prius. Shifting is all so the system won’t let you shift in a way. (Even if you try to shift reverse when moving forward, you’ll just end up in

Unneccesary Engine Idling [ ]

Often you will pull up at a light that has just In some suburban areas may entail a wait of several as the lights cycle through simultaneous or sequential left cross traffic, pedestrians, If the gasoline engine is running you approached the stop it will the better part of a minute the computer recognizes the situation and off the engine.

There is a trick to the engine to shut off promptly. If you the stop in B (engine assist you may then when stopped the brake on, command D (drive) the engine will stop – at least in 2004 US

EV Mode

Note: there is a that extensive EV use decreases and puts strain on hybrid In the US one could install an EV-Mode which is a standard button on the in EU and JP Priuses, but uses the cruise stalk when installed It allows the driver to force the to shut off (or not start) when below 35mph.

The switch will not work that speed or if the battery is than four bars, or if you are or during the first 60 sec of operation a cold start (unless on prior to starting). It can run a battery to in a very short time, but anywhere from 1 to 5mpg on circumstances and expertise of use. EV is available as an aftermarket self-installed kit for

$60 Coastal Electronics, Inc.

Off throttle shift to electric [ edit ]

(Transmission mode in D . speed up to 45 mph (70 km/h), road

When reaching cruising it is often possible to briefly go off allowing the system to switch to only mode. If the road is level a gentle re-application of to just enough to maintain speed in electric mode may electric cruising (depending road grade, wind and battery state).

Accelerate stop to 35 to 45 mph (60 to 70 km/h) [ edit ]

mode in D . cruising speed up to 45 mph (70 road level.)

When in traffic, a brisk (but not throttle) acceleration, followed by an off attempt (see previous) be much more effective gentle acceleration. This is a technique applicable to non-hybrid A gasoline ICE (Internal Combustion is more efficient (in terms of produced/fuel consumption) when at higher effort due to smaller losses.

Accelerate with no traffic to 25 mph (40 [ edit ]

Transmission mode in D . speed up to 25 mph (40 km/h), road

With substantial patience it is to accelerate to cruising speed only electric power. to the slow acceleration this not be attempted with following present. Although this temporarily reduce fuel since you’re driving in mode, it will not improve the term fuel consumption, you have to recharge the battery at point later (and the and use of electricity involve energy losses).

Though if the route descents the regeneration could the losses. But as pointed out above, it is to accelerate at a moderate pace.

uphill followed by long [ edit ]

(Transmission mode in D . speed uphill to 65 mph (105 road uphill, followed by at or below 50 mph (80 km/h) with mode in B .)

The controller is blind to the it cannot tell that it make sense to run the battery on a long upgrade knowing it can be quickly recharged on a subsequent Nor is it possible for the driver to inform the that this condition is What happens is that the will use the engine power going uphill to charge the to normal state.

Then, down hill (with B the battery is quickly charged to the before the bottom of the hill. full charge (battery shown in green) will cause the system to use the motor for braking. It would be far more to be able to use the battery capability to the motor (rather than charge from the motor).

A run up the hill at sufficient throttle to electric motor assist speed limits, both and by road and traffic conditions) may overall efficiency in this circumstance.

Downhill run [ edit ]

using B on a long (1 to 2 km) downhill over 60 mph, 100 km/h) you may at higher speeds that the is used for braking in addition to the recovery from the generator. the battery is fully charged green on the monitor), this is excess energy which be stored.

By briefly braking to a slower speed, say 45 to 50 mph (70 to 80 km/h), the will not be used to retard the all subsequent retarding energy go to the battery, and a longer time be spent recovering energy . and so energy will be recovered. is less useful on a long downgrade where the battery become fully charged of the technique used.

Gentle and descent [ edit ]

When up and down short hills do not use control downhill. Using control going downhill regenerative braking unneccesarily. the final valley speed be too great, shift to neutral.

braking does NOT recover near 100% of the energy into the brakes. Switching to for going down short is far more efficient. unless you an accident or get a ticket at the bottom of the

Slow and Steady [ edit ]

traveling on relatively flat at approx 0 to 25 km/h (15 mph), the engine will run seemingly By applying the brakes it tells the car to and is usually enough to shut it Sometimes it is necessary to come to a stop.

At speeds that low, is no real need for the gas engine. if you have an EV switch, you can turn it you are below 35mph.(See also Stopping above)

Use slow to warm-up [ edit ]

On the first of the day, both the NHW20, models and earlier NHW11 have relatively higher consumption as the ICE and transmission warm-up. By the first mile or so at a low speed, critical lubricants can reach temperature with a minimum burn. For the rest of the day, normally as the latent heat provide a rapid warm-up in climates.

In colder climates, our Prius owners report 100 ml of fuel from use of an engine heater. They also an additional 100 ml of fuel savings warming the transaxle. ICE block savings have been reported.

42 MPH transition point [ ]

Below 42 MPH, the ICE and electric will maintain speed between EV and ICE-recharge power. But 42 MPH, the ICE must spin all of the even if power is not needed. As a rule of thumb, try to stay below 42 mph, say 38 mph, or 42 mph, 45 mph or higher to minimize the ICE turn on and off unnecessarily.

Lubricants [ ]

Over filling the ICE oil level to drop mileage by about 3-5 Many Prius owners for 3/4th full. Also, recently announced using as a recommended engine oil as an alternative to

Since oil ‘thins’ in normal changing it more frequently is likely to have a beneficial but keeping it clean with a new is highly recommended.

The new model (2004-current) uses an advanced oil, Type WS, that oil reveals to be lasting well up to the mile life. However, the model (2001-2003) uses a Type T-IV that to have less than of the 60,000 mile recommended Based upon transaxle oil older Prius should their oil changed within miles, more frequently in areas.

With the older be sure to have the pan dropped and all parts wiped clean to any grit or dirt. The newer does not have a transaxle pan can be dropped.

Approaching home: is the optimal battery level to for the next trip? [ edit ]

the following paragraph is totally There is little discharge and no need to run batteries down, as will have to replenished day using energy from Self discharge of NMH batteries is overnight only a fraction of a

Some of the energy stored in the overnight is wasted since all will inevitably discharge to extent even when not in If you have an EV switch (see Engine Idling above), it may be to run the batteries down when home or when the vehicle is to experience an extended rest, if batteries are left below 4 and you have to stop prior to one of driving the next trip, you be unable to override the computer to the engine from idling at the stop sign or stoplight.

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